MLA

Erdoes, Richard, 1912-2008. San Ildefonso Xmas Dances. Box 65 | San Ildefonso Dances, Pueblos. 1977-1984, undated. https://collections.library.yale.edu/catalog/2091459.

APA, 6th edition

Erdoes, Richard, 1912-2008. (["Box 65 | San Ildefonso Dances, Pueblos"])(1977-1984, undated)[San Ildefonso Xmas Dances]. https://collections.library.yale.edu/catalog/2091459.