MLA

Dänemark 1:25 000, Klitmöller. Mil. Geo., 1944. https://collections.library.yale.edu/catalog/15471466.

APA, 6th edition

Dänemark 1:25 000, Klitmöller. (1944). [Maps]. Mil. Geo., https://collections.library.yale.edu/catalog/15471466.