Case, E. C., & Bergsmark, D. R. (1949). College geography (3rd ed. rev.). J. Wiley.
Chicago Style (17. basım) AtıfCase, Earl Clark, ve Daniel Rockman Bergsmark. College Geography. 3rd ed. rev. New York: J. Wiley, 1949.
MLA (9th ed.) AtıfCase, Earl Clark, ve Daniel Rockman Bergsmark. College Geography. 3rd ed. rev. J. Wiley, 1949.
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