Παραπομπή APA

(1944). A study in urban mapping: Standard symbols and methods of representation. Ottawa: Central Mortgage and Housing Corporation.

Παραπομπή Chicago Style

A Study in Urban Mapping: Standard Symbols and Methods of Representation. Ottawa: Central Mortgage and Housing Corporation, 1944.

Παραπομπή MLA

A Study in Urban Mapping: Standard Symbols and Methods of Representation. Ottawa: Central Mortgage and Housing Corporation, 1944.

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