@misc{493,
  author = {Rensch and R., Calvin and Hallberg, Calinda E. and  and O'Leary, Clare F.},
  title  = {Sociolinguistic survey of Northern Pakistan 3: Hindko and Gujari. SIL & National Institute of Pakistan Studies Quaid-i-Azam University. ; Marshall, David Lee. 1990. A phonological reconstruction of Proto-Hindko. Ann Arbor: UMI.},
  year   = {1992}
}