APA (7th ed.) Citation

Kellogg, V. L. (2012). Elementary Zoology, Second Edition. Project Gutenberg.

Chicago Style (17th ed.) Citation

Kellogg, Vernon L. Elementary Zoology, Second Edition. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Kellogg, Vernon L. Elementary Zoology, Second Edition. Project Gutenberg, 2012.

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