Question: Who directed a 1972 film starring an actress born Barbara Gutscher?

Context paragraphs:
Joaquín Martínez: Joaquin Martinez (November 5, 1930 – January 3, 2012) was a Mexican-born American film, theatre and television actor.  Often appearing in Westerns, Martinez was perhaps best known for starring roles in the 1972 film, "Jeremiah Johnson", in which he played a Crow chief, Paints His Shirt Red, and the 1972 film, "Ulzana's Raid", which was directed by Robert Aldrich and starred Burt Lancaster.  Martinez was often typecast in roles that stereotyped Latinos, Native Americans, and Mexicans, but he frequently changed and reworked his characters through his acting, sometimes causing tensions with a production's director.

Barbara Bouchet: Barbara Bouchet (born Barbara Gutscher, 15 August 1944) is a German-American actress and entrepreneur who lives and works in Italy.

Caliber 9: Caliber 9 (Italian: "Milano calibro 9" ) is a 1972 "poliziottesco" film written and directed by the Fernando Di Leo and starring Gastone Moschin, Mario Adorf and Barbara Bouchet.  The film is based on a book of the same name written by Giorgio Scerbanenco.

Barbara Leigh: Barbara Leigh (born Barbara Ann Kish; November 16, 1946) is a former American actress and fashion model.  Her breakthrough role came in 1972 with the film "Junior Bonner", which she starred alongside her then-boyfriend Steve McQueen.  She later became the first model to wear the Vampirella costume on the cover of the original Warren "Vampirella" magazine, #67 (March 1975).

Barbara Eden: Barbara Eden (born Barbara Jean Morehead, August 23, 1931) is an American film, stage, and television actress, and singer, best known for her starring role of "Jeannie" in the sitcom "I Dream of Jeannie".

Barbara Billingsley: Barbara Billingsley (born Barbara Lillian Combes; December 22, 1915 – October 16, 2010) was an American film, television, voice, and stage actress.

Barbara Bach: Barbara Bach (born Barbara Goldbach; August 27, 1947) is an American actress and model who played the Bond girl Anya Amasova in the James Bond film "The Spy Who Loved Me" (1977) as well as the spy Maritza Petrović in "Force 10 from Navarone" (1978).  She married Ringo Starr, former member of the Beatles, in 1981.

Barbara Barrie: Barbara Barrie (born Barbara Ann Berman, May 23, 1931) is an American actress of film, stage and television.  She is also an accomplished author.

Barbara Shelley: Barbara Shelley (born Barbara T. Kowin; 13 February 1932) is an English film and television actress.

Barbara Carrera: Barbara Carrera (born Barbara Kingsbury on December 31, 1945) is a Nicaraguan American film and television actress and former model.  She is known for her roles as SPECTRE assassin Fatima Blush in "Never Say Never Again", as Natalia Rambova in "Condorman", and as Angelica Nero on the soap opera "Dallas".

Supporting paragraphs: Caliber 9 Barbara Bouchet
Answer: Fernando Di Leo