APA (7th ed.) Citation

Forbes, H. O. (2013). A Hand-book to the Primates, Volume 1 (of 2). Project Gutenberg.

Chicago Style (17th ed.) Citation

Forbes, Henry O. A Hand-book to the Primates, Volume 1 (of 2). Project Gutenberg, 2013.

MLA (9th ed.) Citation

Forbes, Henry O. A Hand-book to the Primates, Volume 1 (of 2). Project Gutenberg, 2013.

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