Cite

January 1 - June 30

MLA

Yale Peruvian Expedition ($d: 1911). January 1 - June 30. Box 11, folder 147-166. January 1 - June 30. https://collections.library.yale.edu/catalog/33226008.

APA, 6th edition

Yale Peruvian Expedition ($d: 1911). (["Box 11, folder 147-166"])(January 1 - June 30)[January 1 - June 30]. https://collections.library.yale.edu/catalog/33226008.