@incollection{ncl_langacker1979,
  author    = {Sischo, William R.},
  booktitle = {Modern Aztec Grammatical Sketches},
  edition   = {56},
  publisher = {Summer Institute of Linguistics},
  series    = {Studies in Uto-Aztecan Grammar},
  title     = {Michoacán Nahual},
  volume    = {2},
  year      = {1979}
}