Romer, A. (1971). Vertibrate paleontology (3rd ed.). University of Chicago Press.
Chicago Style citaatRomer, Alfred. Vertibrate Paleontology. 3rd ed. Chicogo: University of Chicago Press, 1971.
MLA citatieRomer, Alfred. Vertibrate Paleontology. 3rd ed. University of Chicago Press, 1971.
Let op: Deze citaties zijn niet altijd 100% accuraat.