Dyfyniad APA

Wheeler, J. . O. (1998). Economic geography/3rd ed (3rd ed.). John Wiley and Sons.

Dyfyniad Arddull Chicago

Wheeler, James O. Economic Geography/3rd Ed. 3rd ed. New York: John Wiley and Sons, 1998.

Dyfyniad MLA

Wheeler, James O. Economic Geography/3rd Ed. 3rd ed. John Wiley and Sons, 1998.

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