Cita APA (7th ed.)

Broek, J. O. M., Webb, J. W., & Hsu, M. (1973). A geography of mankind (Second edition.). McGraw-Hill Book Company.

Cita Chicago (17th ed.)

Broek, Jan Otto Marius, John Winter Webb, i Mei-Ling Hsu. A Geography of Mankind. Second edition. New York: McGraw-Hill Book Company, 1973.

Cita MLA (9th ed.)

Broek, Jan Otto Marius, et al. A Geography of Mankind. Second edition. McGraw-Hill Book Company, 1973.

Atenció: Aquestes cites poden no estar 100% correctes.