Haspelmath 1990

Haspelmath, Martin. 1990. The grammaticization of passive morphology. Studies in Language 14. 25--72.

@article{haspelmath1990,
  author  = {Haspelmath, Martin},
  journal = {Studies in Language},
  number  = {1},
  pages   = {25--72},
  title   = {The grammaticization of passive morphology},
  volume  = {14},
  year    = {1990}
}