MLA

Littell, Norman M. (Norman Mather), 1899-, United States. Bureau of Indian Affairs. Reflections of a tribal attorney, by Norman M. Littell, general counsel and claims attorney for the Navajo Tribe of Indians, 1947-1957. ca. 1957. https://collections.library.yale.edu/catalog/2112416.

APA, 6th edition

Littell, Norman M. (Norman Mather), 1899-, & United States. Bureau of Indian Affairs. (ca. 1957)[Reflections of a tribal attorney, by Norman M. Littell, general counsel and claims attorney for the Navajo Tribe of Indians, 1947-1957]. https://collections.library.yale.edu/catalog/2112416.