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MLA
Great Britain. War Office. General Staff. Geographical Section. (Cartographer). Portugal 1:50,000. Series 4145. [Porto de Mos, Sheet 27-A] - University of Texas Libraries Collections. 1942. https://collections.lib.utexas.edu/catalog/utlmaps:783501d0-f378-4ee7-a362-8ea4d08b6cd6APA
Great Britain. War Office. General Staff. Geographical Section. (Cartographer). (1942). Portugal 1:50,000. Series 4145. [Porto de Mos, Sheet 27-A]. Retrieved July 30, 2025, from https://collections.lib.utexas.edu/catalog/utlmaps:783501d0-f378-4ee7-a362-8ea4d08b6cd6Chicago
Great Britain. War Office. General Staff. Geographical Section. (Cartographer). Portugal 1:50,000. Series 4145. [Porto de Mos, Sheet 27-A]. 1942. "Portugal 1:50,000. Series 4145. [Porto de Mos, Sheet 27-A] – Collections". University of Texas Libraries Collections. <https://collections.lib.utexas.edu/catalog/utlmaps:783501d0-f378-4ee7-a362-8ea4d08b6cd6> (30-July-2025).Note that these citations have been automatically generated, please verify that citation is correct and contains all necessary information.