Cite

Belgian Congo. Chart of the River Aruwimi : from a survey by Robt. L. Reid, 1908-10.

MLA

Royal Geographical Society (Great Britain). Belgian Congo. Chart of the River Aruwimi : from a survey by Robt. L. Reid, 1908-10.. BRBL_00343. 1911. https://collections.library.yale.edu/catalog/15533527.

APA, 6th edition

Royal Geographical Society (Great Britain). (["BRBL_00343"])(1911)[Belgian Congo. Chart of the River Aruwimi : from a survey by Robt. L. Reid, 1908-10.]. https://collections.library.yale.edu/catalog/15533527.