APA
Glenn T. Trewartha, . (1972). The Less Developed Realm : a geography of its population. New York: John Wiley & Sons, Inc.
Chicago
Glenn T. Trewartha, . 1972. The Less Developed Realm : a geography of its population. New York: John Wiley & Sons, Inc.
Harvard
Glenn T. Trewartha, . (1972). The Less Developed Realm : a geography of its population. New York: John Wiley & Sons, Inc.
MLA
Glenn T. Trewartha, . The Less Developed Realm : a geography of its population. New York: John Wiley & Sons, Inc. 1972.
