MLA

Durand, Maurice M., 1966-. An Nam Phong Thổ Thoại. Box 13, folder 127. Circa 1700-circa 1900. https://collections.library.yale.edu/catalog/10924968.

APA, 6th edition

Durand, Maurice M., 1966-. (["Box 13, folder 127"])(Circa 1700-circa 1900)[An Nam Phong Thổ Thoại]. https://collections.library.yale.edu/catalog/10924968.