Παραπομπή APA

Cramer, R. E. (1963). A workbook in essentials of cartography and mapping. Dubuque, IA: Brown.

Παραπομπή Chicago Style

Cramer, Robert E. A Workbook in Essentials of Cartography and Mapping. Dubuque, IA: Brown, 1963.

Παραπομπή MLA

Cramer, Robert E. A Workbook in Essentials of Cartography and Mapping. Dubuque, IA: Brown, 1963.

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