APA (7th ed.) Citation

Lawrence, D. H. (2007). Tortoises. Project Gutenberg.

Chicago Style (17th ed.) Citation

Lawrence, D. H. Tortoises. Project Gutenberg, 2007.

MLA (9th ed.) Citation

Lawrence, D. H. Tortoises. Project Gutenberg, 2007.

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