Correspondence with Donald Gallup
MLA
Gallup, Donald, 1913-2000. Correspondence with Donald Gallup. Box 25. 1959-1999. https://collections.library.yale.edu/catalog/10542161.
APA, 6th edition
Gallup, Donald, 1913-2000. (["Box 25"])(1959-1999)[Correspondence with Donald Gallup]. https://collections.library.yale.edu/catalog/10542161.