The National Geographic Magazine map of Africa / prepared from latest geographical data by Gilbert H. Grosvenor, Editor.
MLA
The National Geographic Magazine Map of Africa / Prepared from Latest Geographical Data by Gilbert H. Grosvenor, Editor. National Geographic Society, 1909. https://collections.library.yale.edu/catalog/15952183.
APA, 6th edition
The National Geographic Magazine map of Africa / prepared from latest geographical data by Gilbert H. Grosvenor, Editor. (1909). [Maps]. National Geographic Society, https://collections.library.yale.edu/catalog/15952183.
