APA (7th ed.) Citation

UTGARD, R. O. Man-s Finite Earth. Twenty-First Century Books.

Chicago Style (17th ed.) Citation

UTGARD, Russell O. Man-s Finite Earth. Twenty-First Century Books.

MLA (8th ed.) Citation

UTGARD, Russell O. Man-s Finite Earth. Twenty-First Century Books.

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