Reference: Haas 1948

Haas, Mary R. 1948. Classificatory verbs in Muskogee. International Journal of American Linguistics 14(4). 244–246.

http://www.jstor.org/stable/1262879

@article{haas1948muskogee,
  author  = {Haas, Mary R.},
  journal = {International Journal of American Linguistics},
  number  = {4},
  pages   = {244–246},
  title   = {Classificatory verbs in Muskogee},
  url     = {http://www.jstor.org/stable/1262879},
  volume  = {14},
  year    = {1948}
}