MLA

McGlashan, E. L. (Everitt Lynn), 1911-1978. Harrison, C. A. Receipt for sale of "boy, Dick, aged about seven years," sold to W. W. Holden. Wake County, North Carolina (C6). Box 1, folder 19. 1857 Dec 1. https://collections.library.yale.edu/catalog/33219118.

APA, 6th edition

McGlashan, E. L. (Everitt Lynn), 1911-1978. (["Box 1, folder 19"])(1857 Dec 1)[Harrison, C. A. Receipt for sale of "boy, Dick, aged about seven years," sold to W. W. Holden. Wake County, North Carolina (C6)]. https://collections.library.yale.edu/catalog/33219118.