APA
Hartshorn T. A. &. A. J. W., . (1988). Economic Geography. Prentice - Hall, New Delhi: .
Chicago
Hartshorn Truman A & Alexander John W, . 1988. Economic Geography. Prentice - Hall, New Delhi: .
Harvard
Hartshorn T. A. &. A. J. W., . (1988). Economic Geography. Prentice - Hall, New Delhi: .
MLA
Hartshorn Truman A & Alexander John W, . Economic Geography. Prentice - Hall, New Delhi: . 1988.