MLA

Niles, D. T. (Daniel Thambyrajah), 1908-1970. Niles family: Mercy to Dulcie, Elsie, Jefam, W.P., Preman, Jayam, and Chewan. 1, folder 4. 1925-1967. https://collections.library.yale.edu/catalog/33248838.

APA, 6th edition

Niles, D. T. (Daniel Thambyrajah), 1908-1970. (["1, folder 4"])(1925-1967)[Niles family: Mercy to Dulcie, Elsie, Jefam, W.P., Preman, Jayam, and Chewan]. https://collections.library.yale.edu/catalog/33248838.