International Symposium on Man's Role in Changing the Face of the Earth, Princeton, N.J, & Thomas, W. L. (1956). Man's role in changing the face of the earth. Published for the Wenner-Gren Foundation for Anthropological Research and the National Science Foundation by the University of Chicago Press.
Παραπομπή σε μορφή Chicago (17η εκδ.)International Symposium on Man's Role in Changing the Face of the Earth, Princeton, N.J, και William Leroy Thomas. Man's Role in Changing the Face of the Earth. Chicago: Published for the Wenner-Gren Foundation for Anthropological Research and the National Science Foundation by the University of Chicago Press, 1956.
Παραπομπή σε μορφή MLA (9th εκδ.)International Symposium on Man's Role in Changing the Face of the Earth, Princeton, N.J, και William Leroy Thomas. Man's Role in Changing the Face of the Earth. Published for the Wenner-Gren Foundation for Anthropological Research and the National Science Foundation by the University of Chicago Press, 1956.