Citazione Stile APA (7a Edizione)

Romer, A. S. (1966). Paleontology (3rd ed.). The University of Chicago Press.

Citazione stile Chigago Style (17a edizione)

Romer, Alfred Sherwood. Paleontology. 3rd ed. Chicago and London: The University of Chicago Press, 1966.

Citatione MLA (9a ed.)

Romer, Alfred Sherwood. Paleontology. 3rd ed. The University of Chicago Press, 1966.