APA
Truman A H. . J. w. A., . (1988). Economic Geography. New Yersey: Prentice Hall.
Chicago
Truman A Harstshorn Jhon w Alexander, . 1988. Economic Geography. New Yersey: Prentice Hall.
Harvard
Truman A H. . J. w. A., . (1988). Economic Geography. New Yersey: Prentice Hall.
MLA
Truman A Harstshorn Jhon w Alexander, . Economic Geography. New Yersey: Prentice Hall. 1988.
