MLA

Jensen, Carl C., et al. Clipperton Island, North Pacific Ocean / Surveyed 1893 by Carl C. Jensen. United States Coast & Geodetic Survey?, 1893. https://collections.library.yale.edu/catalog/15235159.

APA, 6th edition

Jensen, C. C., Coast, U. S., & Survey, G. (1893). Clipperton Island, North Pacific Ocean / surveyed 1893 by Carl C. Jensen. [Maps]. United States Coast & Geodetic Survey? https://collections.library.yale.edu/catalog/15235159.