Citazione Stile APA (7a Edizione)

Lambert, D., & Diagram Group. (1987). The field guide to early man. Facts on File.

Citazione stile Chigago Style (17a edizione)

Lambert, David, e Diagram Group. The Field Guide to Early Man. New York: Facts on File, 1987.

Citatione MLA (9a ed.)

Lambert, David, e Diagram Group. The Field Guide to Early Man. Facts on File, 1987.