MLA

Yale Peruvian Expedition ($d: 1911). Journal. Box 19, folder 15. 1912 May-November. https://collections.library.yale.edu/catalog/33346589.

APA, 6th edition

Yale Peruvian Expedition ($d: 1911). (["Box 19, folder 15"])(1912 May-November)[Journal]. https://collections.library.yale.edu/catalog/33346589.