Nyasaland Protectorate [cartographic material] / revised and drawn in the Lands Office, Blantyre, Nyasaland.
MLA
Nyasaland Protectorate [Cartographic Material] / Revised and Drawn in the Lands Office, Blantyre, Nyasaland. 1942. https://collections.library.yale.edu/catalog/15532794.
APA, 6th edition
Nyasaland Protectorate [cartographic material] / revised and drawn in the Lands Office, Blantyre, Nyasaland. (1942). [Maps]. https://collections.library.yale.edu/catalog/15532794.