Broek, J. O. M., & Webb, J. W. (1978). A geography of mankind / (by) Jan O.M. Broek, John W. Webb (3rd ed.). McGraw-Hill.
Chicago Style (17th ed.) CitationBroek, Jan Otto Marius, and John Winter Webb. A Geography of Mankind / (by) Jan O.M. Broek, John W. Webb. 3rd ed. New York ; London (etc.): McGraw-Hill, 1978.
MLA (9th ed.) CitationBroek, Jan Otto Marius, and John Winter Webb. A Geography of Mankind / (by) Jan O.M. Broek, John W. Webb. 3rd ed. McGraw-Hill, 1978.
Warning: These citations may not always be 100% accurate.