APA (7th ed.) Citation

Dick, P. K. (2010). Beyond the door. Project Gutenberg.

Chicago Style (17th ed.) Citation

Dick, Philip K. Beyond the Door. To be supplied: Project Gutenberg, 2010.

MLA (8th ed.) Citation

Dick, Philip K. Beyond the Door. Project Gutenberg, 2010.

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