APA (7th ed.) Citation

Vonnegut, K., & Kossin, S. (2009). The Big Trip Up Yonder. Project Gutenberg.

Chicago Style (17th ed.) Citation

Vonnegut, Kurt, and Sandy Kossin. The Big Trip Up Yonder. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Vonnegut, Kurt, and Sandy Kossin. The Big Trip Up Yonder. Project Gutenberg, 2009.

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