Cite

Sketchbooks (predominantly containing drawings of Italy)

MLA

Byron, Robert, 1905-1941. Sketchbooks (predominantly containing drawings of Italy). Box 47, folder 698-699. undated. https://collections.library.yale.edu/catalog/2107238.

APA, 6th edition

Byron, Robert, 1905-1941. (["Box 47, folder 698-699"])(undated)[Sketchbooks (predominantly containing drawings of Italy)]. https://collections.library.yale.edu/catalog/2107238.