Ruhlen 1987

Ruhlen, Merritt. 1987. A Guide to the World's Languages. Vol. I: Classification. Stanford: Stanford University Press.

@book{Ruhlen-1987,
  address   = {Stanford},
  author    = {Ruhlen, Merritt},
  publisher = {Stanford University Press},
  title     = {A Guide to the World's Languages. Vol. I: Classification},
  year      = {1987}
}