APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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