MLA

Kipling, Rudyard, 1865-1936. Notebook. Box 6. circa 1894. https://collections.library.yale.edu/catalog/16832853.

APA, 6th edition

Kipling, Rudyard, 1865-1936. (["Box 6"])(circa 1894)[Notebook]. https://collections.library.yale.edu/catalog/16832853.