MLA

Denham, John Charles, -1867. Lawrence, Thomas: ink drawing of a palette with student color instructions for Henry Hamilton. Box 1, folder 37. 1809. https://collections.library.yale.edu/catalog/2067115.

APA, 6th edition

Denham, John Charles, -1867. (["Box 1, folder 37"])(1809)[Lawrence, Thomas: ink drawing of a palette with student color instructions for Henry Hamilton]. https://collections.library.yale.edu/catalog/2067115.