Cite

Wacht am Rhein [cartographic material] / TIME map by R. M. Chapin, Jr.

MLA

Chapin, R. M., Jr, and inc Time. Wacht Am Rhein [Cartographic Material] / TIME Map by R. M. Chapin, Jr. : TIME, Inc., 1944. https://collections.library.yale.edu/catalog/15238362.

APA, 6th edition

Chapin, R. M., Jr, & Time, inc. (1944). Wacht am Rhein [cartographic material] / TIME map by R. M. Chapin, Jr. [Maps]. : TIME, Inc., https://collections.library.yale.edu/catalog/15238362.