Cite

Map of Alaska : compiled chiefly from maps of the U.S. Geological Survey / engraved and printed by the U.S. Geological Survey ; Alfred H. Brooks, Geologist in charge, Division of Alaskan Mineral Resources.

MLA

Geological Survey (U.S.). Map of Alaska : compiled chiefly from maps of the U.S. Geological Survey / engraved and printed by the U.S. Geological Survey ; Alfred H. Brooks, Geologist in charge, Division of Alaskan Mineral Resources.. BRBL_00631. 1913. https://collections.library.yale.edu/catalog/15821724.

APA, 6th edition

Geological Survey (U.S.). (["BRBL_00631"])(1913)[Map of Alaska : compiled chiefly from maps of the U.S. Geological Survey / engraved and printed by the U.S. Geological Survey ; Alfred H. Brooks, Geologist in charge, Division of Alaskan Mineral Resources.]. https://collections.library.yale.edu/catalog/15821724.