Cita APA

Broek, J. O. M., & Webb, J. W. (1968). A geography of mankind. McGraw-Hill.

Citación estilo Chicago

Broek, Jan Otto Marius, and John Winter Webb. A Geography of Mankind. New York: McGraw-Hill, 1968.

Cita MLA

Broek, Jan Otto Marius, and John Winter Webb. A Geography of Mankind. McGraw-Hill, 1968.