MLA

Cross, H. Page, 1910-1975. New Haven Trust Co., Church Street, New Haven, Connecticut.. Box 1, folder 20. 1936-1975. https://collections.library.yale.edu/catalog/10684746.

APA, 6th edition

Cross, H. Page, 1910-1975. (["Box 1, folder 20"])(1936-1975)[New Haven Trust Co., Church Street, New Haven, Connecticut.]. https://collections.library.yale.edu/catalog/10684746.