APA (7th ed.) Citation

Simmons, G. (2007). Billions of missing links. Harvest House Publishers.

Chicago Style (17th ed.) Citation

Simmons, Geoffrey. Billions of Missing Links. Eugene, OR: Harvest House Publishers, 2007.

MLA (9th ed.) Citation

Simmons, Geoffrey. Billions of Missing Links. Harvest House Publishers, 2007.

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