APA (7th ed.) Citation

SIMPSON, G. G. (1969). Life an Introduction to Biology. Harcourt Brace & World, Inc.

Chicago Style (17th ed.) Citation

SIMPSON, George Gaylord. Life an Introduction to Biology. Harcourt Brace & World, Inc, 1969.

MLA (8th ed.) Citation

SIMPSON, George Gaylord. Life an Introduction to Biology. Harcourt Brace & World, Inc, 1969.

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