Cite

Peru, Inca ruins

MLA

Yale Peruvian Expedition ($d: 1911). Peru, Inca ruins. Box 31, folder 3-5. 1911-1923. https://collections.library.yale.edu/catalog/10011435.

APA, 6th edition

Yale Peruvian Expedition ($d: 1911). (["Box 31, folder 3-5"])(1911-1923)[Peru, Inca ruins]. https://collections.library.yale.edu/catalog/10011435.