Tolong jelaskan mengenai Lihat juga dari Jack si tumit pegas

Berlitz, Charles. Charles Berlitz's World of Strange Phenomena.  Fawcett, 1989. ISBN 0-449-21825-2.

Clark, Jerome. Unexplained!: Strange Sightings, Incredible Occurrences and Puzzling Physical Phenomena.  Visible Ink, 1993. ISBN 1-57859-070-1.

Clarke, David. Strange South Yorkshire: Myth, Magic and Memory in the Don Valley.  Sigma Press, 1994. ISBN 1-85058-404-4.

Cohen, Daniel. The Encyclopedia of Monsters. Dodd Mead, 1982. ISBN 0-396-09051-6.

Dash, Mike. 'Spring-Heeled Jack', in Moore, Steve [ed.],Fortean Studies 3 (1996), 7–125.

Haining, Peter. The Legend and Bizarre Crimes of Spring Heeled Jack. London: Muller, 1977. ISBN 0-584-10276-3.

Nevins, Jess. The Encyclopaedia of Fantastic Victoriana.  MonkeyBrain, 2005. ISBN 1-932265-08-2.

Randles, Jenny. Strange and Unexplained Mysteries of the 20th Century. Sterling, 1994. ISBN 0-8069-0768-1.

Robbins, Joyce. Borderlands: The World's Greatest Mysteries.  Bounty, 1991. ISBN 1-85051-698-7.

Simpson, Jacqueline. Spring-Heeled Jack (leaflet, January 2001). International Society for Contemporary Legend Research.