Reference: Young and Morgan 1972

Young, Robert W. & William Morgan. 1972. The Navaho language: the elements of Navaho grammar with a dictionary in two parts containing basic vocabularies of Navaho and English. Salt Lake City: Deseret Book Company. 499pp.

@book{young1972navajo,
  address   = {Salt Lake City},
  author    = {Young, Robert W. and Morgan, William},
  pages     = {499},
  publisher = {Deseret Book Company},
  title     = {The Navaho language: the elements of Navaho grammar with a dictionary in two parts containing basic vocabularies of Navaho and English},
  year      = {1972}
}