APA (7th ed.) Citation

Piper, H. B. (2009). Omnilingual. Project Gutenberg.

Chicago Style (17th ed.) Citation

Piper, H. Beam. Omnilingual. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Piper, H. Beam. Omnilingual. Project Gutenberg, 2009.

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