Cite

Africa showing progress of exploration / published by the Royal Geographical Society.

MLA

Royal Geographical Society (Great Britain). Africa showing progress of exploration / published by the Royal Geographical Society.. BRBL_00329. 1911. https://collections.library.yale.edu/catalog/15532659.

APA, 6th edition

Royal Geographical Society (Great Britain). (["BRBL_00329"])(1911)[Africa showing progress of exploration / published by the Royal Geographical Society.]. https://collections.library.yale.edu/catalog/15532659.