APA (7th ed.) Citation

Jones, R. F., & Finlay, V. (2008). The Memory of Mars. Project Gutenberg.

Chicago Style (17th ed.) Citation

Jones, Raymond F., and Virgil Finlay. The Memory of Mars. Project Gutenberg, 2008.

MLA (9th ed.) Citation

Jones, Raymond F., and Virgil Finlay. The Memory of Mars. Project Gutenberg, 2008.

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