APA (7th ed.) Citation

Alcala, A. C., & Brown, W. C. (1998). Philippine amphibians: An illustrated field guide. Bookmark, Inc.

Chicago Style (17th ed.) Citation

Alcala, Angel C., and Walter Creighton Brown. Philippine Amphibians: An Illustrated Field Guide. Makati City, Philippines: Bookmark, Inc, 1998.

MLA (9th ed.) Citation

Alcala, Angel C., and Walter Creighton Brown. Philippine Amphibians: An Illustrated Field Guide. Bookmark, Inc, 1998.