Maartz, G.A.
MLA
Marsh, Othniel Charles, 1831-1899. Maartz, G.A.. Box 22, folder 870. 1873. https://collections.library.yale.edu/catalog/32563127.
APA, 6th edition
Marsh, Othniel Charles, 1831-1899. (["Box 22, folder 870"])(1873)[Maartz, G.A.]. https://collections.library.yale.edu/catalog/32563127.