Dyfyniad APA

Boehm, R. G., Armstrong, D. G., & Hunkins, . F. P. (2000). Geography: The world and its people. Glencoe/McGraw Hill.

Dyfyniad Arddull Chicago

Boehm, Richard G., David G. Armstrong, and Francis P. Hunkins. Geography: The World and Its People. Westerville, Ohio : New York: Glencoe/McGraw Hill, 2000.

Dyfyniad MLA

Boehm, Richard G., et al. Geography: The World and Its People. Glencoe/McGraw Hill, 2000.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.