The National geographic magazine map of the North Pole regions / prepared by Gilbert H. Grosvenor, editor.
MLA
National Geographic Society (U.S.). The National geographic magazine map of the North Pole regions / prepared by Gilbert H. Grosvenor, editor.. BRBL_00013. 1907. https://collections.library.yale.edu/catalog/15824487.
APA, 6th edition
National Geographic Society (U.S.). (["BRBL_00013"])(1907)[The National geographic magazine map of the North Pole regions / prepared by Gilbert H. Grosvenor, editor.]. https://collections.library.yale.edu/catalog/15824487.