APA (7th ed.) Citation

Wells, H. G. (2007). Text Book of Biology, Part 1: Vertebrata. Project Gutenberg.

Chicago Style (17th ed.) Citation

Wells, H. G. Text Book of Biology, Part 1: Vertebrata. Project Gutenberg, 2007.

MLA (9th ed.) Citation

Wells, H. G. Text Book of Biology, Part 1: Vertebrata. Project Gutenberg, 2007.

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