Magrini family (other correspondence and documents)
MLA
Koch, Frederick R. (Frederick Robinson). Magrini family (other correspondence and documents). Box 50, folder 1048. 1917-18, n.d.. https://collections.library.yale.edu/catalog/16101621.
APA, 6th edition
Koch, Frederick R. (Frederick Robinson). (["Box 50, folder 1048"])(1917-18, n.d.)[Magrini family (other correspondence and documents)]. https://collections.library.yale.edu/catalog/16101621.