APA
Hilton T. E., . (1972). Practical geography in Africa. London: Longman.
Chicago
Hilton T E, . 1972. Practical geography in Africa. London: Longman.
Harvard
Hilton T. E., . (1972). Practical geography in Africa. London: Longman.
MLA
Hilton T E, . Practical geography in Africa. London: Longman. 1972.