Cite

Postal route map : of the Union of South Africa / compiled from the most recent information, G.P.O. Cape Town. December 1911.

MLA

Postal Route Map : of the Union of South Africa / Compiled from the Most Recent Information, G.P.O. Cape Town. December 1911. G.P.O., 1911. https://collections.library.yale.edu/catalog/15532813.

APA, 6th edition

Postal route map : of the Union of South Africa / compiled from the most recent information, G.P.O. Cape Town. December 1911. (1911). [Maps]. G.P.O., https://collections.library.yale.edu/catalog/15532813.