Gregor, A. S. (1974). Man's mark on the land: The changing environment from the Stone Age to the Age of Smog, Sewage, and Tar Feet. New York: Soribner.
Chicago Style CitationGregor, Arthur S. Man's Mark On the Land: The Changing Environment From the Stone Age to the Age of Smog, Sewage, and Tar Feet. New York: Soribner, 1974.
MLA CitationGregor, Arthur S. Man's Mark On the Land: The Changing Environment From the Stone Age to the Age of Smog, Sewage, and Tar Feet. New York: Soribner, 1974.
Warning: These citations may not always be 100% accurate.