APA (7th ed.) Citation

Krol, E. (1992). Hitchhiker's Guide to the Internet. Project Gutenberg.

Chicago Style (17th ed.) Citation

Krol, Ed. Hitchhiker's Guide to the Internet. Project Gutenberg, 1992.

MLA (9th ed.) Citation

Krol, Ed. Hitchhiker's Guide to the Internet. Project Gutenberg, 1992.

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