APA (7th ed.) Citation

Piper, H. B., & Napoli, V. (2006). Time and Time Again. Project Gutenberg.

Chicago Style (17th ed.) Citation

Piper, H. Beam, and Vincent Napoli. Time and Time Again. Project Gutenberg, 2006.

MLA (9th ed.) Citation

Piper, H. Beam, and Vincent Napoli. Time and Time Again. Project Gutenberg, 2006.

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