Leer, Jeff. 1979. Proto-Athabaskan Verb Stem Variation, part 1: Phonology. (Alaska Native Language Center, Research Paper, 1.) Fairbanks: Alaska Native Language Center. iii+100pp.
@book{leer1979protophonology, address = {Fairbanks}, author = {Leer, Jeff}, pages = {iii+100}, publisher = {Alaska Native Language Center}, series = {Alaska Native Language Center, Research Paper}, title = {Proto-Athabaskan Verb Stem Variation, part 1: Phonology}, volume = {1}, year = {1979} }