APA (7th ed.) Citation

Burroughs, E. R. (1993). The Return of Tarzan. Project Gutenberg.

Chicago Style (17th ed.) Citation

Burroughs, Edgar Rice. The Return of Tarzan. Project Gutenberg, 1993.

MLA (9th ed.) Citation

Burroughs, Edgar Rice. The Return of Tarzan. Project Gutenberg, 1993.

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