Cita APA (7a ed.)
Boehm, R. G., Armstrong, D. G., & Hunkins, F. P. (2002). Geography: The world and its people. Glencoe/ McGraw-Hill.
Cita Chicago Style (17a ed.)
Boehm, Richard G., David G. Armstrong, y Francis P. Hunkins. Geography: The World and Its People. New York: Glencoe/ McGraw-Hill, 2002.
Cita MLA (9a ed.)
Boehm, Richard G., et al. Geography: The World and Its People. Glencoe/ McGraw-Hill, 2002.
Precaución: Estas citas no son 100% exactas.