Cita APA (7a ed.)

Morris, J. W., Tremblay, J., & Freeman, O. W. (1958). World geography. McGraw-Hill.

Cita Chicago Style (17a ed.)

Morris, John W., Jean-Paul Tremblay, y Otis Willard Freeman. World Geography. New York [etc.]: McGraw-Hill, 1958.

Cita MLA (9a ed.)

Morris, John W., et al. World Geography. McGraw-Hill, 1958.