Cite

North East Greenland, sketch map : showing the surveys of the Danish expedition, 1906-8.

MLA

Royal Geographical Society (Great Britain). North East Greenland, sketch map : showing the surveys of the Danish expedition, 1906-8.. BRBL_00013. 1909. https://collections.library.yale.edu/catalog/15824490.

APA, 6th edition

Royal Geographical Society (Great Britain). (["BRBL_00013"])(1909)[North East Greenland, sketch map : showing the surveys of the Danish expedition, 1906-8.]. https://collections.library.yale.edu/catalog/15824490.