Cite

Haeckel, Ernest (1834-1919)

MLA

Marsh, Othniel Charles, 1831-1899. Haeckel, Ernest (1834-1919). Box 13, folder 561. 1885-1895. https://collections.library.yale.edu/catalog/32558729.

APA, 6th edition

Marsh, Othniel Charles, 1831-1899. (["Box 13, folder 561"])(1885-1895)[Haeckel, Ernest (1834-1919)]. https://collections.library.yale.edu/catalog/32558729.