APA (7th ed.) Citation

Mackenzie, J. P. S. (1997). Seabirds. Key Porter Books.

Chicago Style (17th ed.) Citation

Mackenzie, John P. S. Seabirds. Toronto, Ont.: Key Porter Books, 1997.

MLA (9th ed.) Citation

Mackenzie, John P. S. Seabirds. Key Porter Books, 1997.

Warning: These citations may not always be 100% accurate.