APA (7th ed.) Citation

Brown, F. (2008). Earthmen Bearing Gifts. Project Gutenberg.

Chicago Style (17th ed.) Citation

Brown, Fredric. Earthmen Bearing Gifts. Project Gutenberg, 2008.

MLA (9th ed.) Citation

Brown, Fredric. Earthmen Bearing Gifts. Project Gutenberg, 2008.

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