El Morro Pecos 91
MLA
Erdoes, Richard, 1912-2008. El Morro Pecos 91. Box 73 | Anasazi Ruins, New Mexico. 1962-1991, undated. https://collections.library.yale.edu/catalog/2097039.
APA, 6th edition
Erdoes, Richard, 1912-2008. (["Box 73 | Anasazi Ruins, New Mexico"])(1962-1991, undated)[El Morro Pecos 91]. https://collections.library.yale.edu/catalog/2097039.