Sykes family and friends
MLA
Sykes, Christopher, 1907-1986. Sykes family and friends. Box 31, folder 364-371. circa 1930s - 1972, undated. https://collections.library.yale.edu/catalog/2040352.
APA, 6th edition
Sykes, Christopher, 1907-1986. (["Box 31, folder 364-371"])(circa 1930s - 1972, undated)[Sykes family and friends]. https://collections.library.yale.edu/catalog/2040352.