APA (7th ed.) Citation

Clapham, R. The Book of the Otter: A manual for sportsmen and naturalists.

Chicago Style (17th ed.) Citation

Clapham, Richard. The Book of the Otter: A Manual for Sportsmen and Naturalists.

MLA (9th ed.) Citation

Clapham, Richard. The Book of the Otter: A Manual for Sportsmen and Naturalists.

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