Title: Wolf (novel)
Content:  Wolf is a young-adult novel by Gillian Cross, published by Oxford in 1990. Set in London, it features communal living, terrorism, and wolves (according to Library of Congress Subject Headings) and a teenage girl in relation to her mother, father, and paternal grandmother. Cross won the annual Carnegie Medal recognising the year's best children's book by a British subject. Coincidentally, The Cry of the Wolf by Melvin Burgess, featuring a grey wolf as the main character, was the highly commended runner up. Holiday House published the first U.S. edition in 1991.
Title: The Wolf (picture book)
Content:  The Wolf is a 1991 Australian children's picture book by Margaret Barbalet and Jane Tanner. It is about a family that is terrorised by a wolf over a number of months but upon allowing it into their house realise that it means no harm.
Title: Wolf (1994 film)
Content:  Wolf is a 1994 American romantic horror film directed by Mike Nichols and starring Jack Nicholson, Michelle Pfeiffer, James Spader, Kate Nelligan, Richard Jenkins, Christopher Plummer, Eileen Atkins, David Hyde Pierce, and Om Puri. It was written by Jim Harrison and Wesley Strick, and an uncredited Elaine May. The music was composed by Ennio Morricone and the cinematography was done by Giuseppe Rotunno.
Title: Wolf Hunting
Content:  Wolf Hunting is a novel in the Firekeeper Saga series by Jane Lindskold.
Title: Susan Krinard
Content: 1) Touch of the Wolf, Oct 1999 ISBN: 9780553580181 ; 2) Once a Wolf, July 2000 ISBN: 9780553580211 ; 3) Secret of the Wolf, Oct 2001 ISBN: 9780425181997 ; 4) To Catch a Wolf, Sep 2003 also in Call of the Wolf ISBN: 9780425192085 ; 5) To Tame a Wolf, May 2005 also in Call of the Wolf ISBN: 9780373770472 ; 6) Bride of the Wolf, Mar 2010 ISBN: 9780373774777 ; 7) Luck of the Wolf, Nov 2010 ISBN: 9780373774692 ; 8) Code of the Wolf, Aug 2011 ISBN: 9780373775521 
Title: Wolf (name)
Content: Wolf Larsen, in the 1904 novel The Sea-Wolf by Jack London ; Father Wolf, in the 1894 novel The Jungle Book by Rudyard Kipling ; Ralph Wolf, in a series of animated cartoons from Looney Tunes and Merrie Melodies ; Wolf, in the 1984 novel The Talisman by Stephen King and Peter Straub ; The Wolf, the name by which Ezra is known in The Night Angel Trilogy fantasy series ; Wolf, codename for a character in the novel Stormbreaker by Anthony Horowitz ; Wolf, the nickname given to Ze'ev Kesley of The Lunar Chronicles fantasy novel series ; Bigby Wolf, in the comic book series Fables ; Wolf (The 10th Kingdom), on the television show The 10th Kingdom ; Wolf, from Fire Emblem: Shadow Dragon and the Blade of Light, Fire Emblem: Mystery of the Emblem, and their respective 
Title: Wolf in the Shadows
Content:  Wolf in the Shadows is a book written by Marcia Muller and published by Mysterious Press in 1993 that won the Anthony Award for Best Novel in 1994.
Title: The Wolfen
Content:  The Wolfen (1978) is the debut novel of Whitley Strieber. It tells the story of two police detectives in New York City who are involved in the investigation of suspicious deaths across the city, which are revealed to be the work of a race of intelligent beings descended from canids, called the Wolfen. The novel is told from the point of view of the human characters as well from the Wolfen themselves. A film adaptation directed by Michael Wadleigh and starring Albert Finney was released in 1981.
Title: The Wolf (picture book)
Content: 1991, Australia, Penguin Books ISBN: 9780670836147 ; 1992, USA, Macmillan ISBN: 9780670836147 
Title: Wolfbane (novel)
Content:   Wolfbane is a science fiction novel by American writers Frederik Pohl and C. M. Kornbluth, published in 1959. It was serialized in Galaxy in 1957, with illustrations by Wally Wood. In his review column for F&SF, Damon Knight selected the novel as one of the 10 best genre books of 1959.

Question: Who is the author of Wolf?
Answer: Gillian Cross.