Tohutoro APA (7th ed.)

Berry, B. J., Conkling, E. C., & Ray, D. M. (1987). Economic Geography. Prentice-Hall.

Tohutoru Kātū Chicago (17th ed.)

Berry, Brian J.L, Edgar C. Conkling, me D. Michael Ray. Economic Geography. Englewood Cliffs: Prentice-Hall, 1987.

Tohutoro MLA (9th ed.)

Berry, Brian J.L, et al. Economic Geography. Prentice-Hall, 1987.