APA (7th ed.) Citation

Morris, D. (1997). Cat world: A feline encyclopedia (First American edition.). Penguin Reference.

Chicago Style (17th ed.) Citation

Morris, Desmond. Cat World: A Feline Encyclopedia. First American edition. New York, N.Y., U.S.A.: Penguin Reference, 1997.

MLA (9th ed.) Citation

Morris, Desmond. Cat World: A Feline Encyclopedia. First American edition. Penguin Reference, 1997.