MLA

Leigh, Chandos, 1791-1850. Chandos Leigh family papers, 1814-1850. Box 1. https://collections.library.yale.edu/catalog/31902755.

APA, 6th edition

Leigh, Chandos, 1791-1850. (["Box 1"])[Chandos Leigh family papers, 1814-1850]. https://collections.library.yale.edu/catalog/31902755.