Cite

Reconnaissance map, southern part of Seward Peninsula, Alaska / topography by E.C. Barnard, D.L. Reaburn, J.G. Hefty ... [et al.].

MLA

Geological Survey (U.S.). Reconnaissance map, southern part of Seward Peninsula, Alaska / topography by E.C. Barnard, D.L. Reaburn, J.G. Hefty ... [et al.].. BRBL_00634. 1907. https://collections.library.yale.edu/catalog/15821768.

APA, 6th edition

Geological Survey (U.S.). (["BRBL_00634"])(1907)[Reconnaissance map, southern part of Seward Peninsula, Alaska / topography by E.C. Barnard, D.L. Reaburn, J.G. Hefty ... [et al.].]. https://collections.library.yale.edu/catalog/15821768.