Ekblaw, S. E., & Mulkerne, D. J. D. (1958). Workbook for economic and social geography. New York: Mc Graw-Hill.
Παραπομπή Chicago StyleEkblaw, Sidney E., and Donald J. D. Mulkerne. Workbook for Economic and Social Geography. New York: Mc Graw-Hill, 1958.
Παραπομπή MLAEkblaw, Sidney E., and Donald J. D. Mulkerne. Workbook for Economic and Social Geography. New York: Mc Graw-Hill, 1958.
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