Reference: Alves 1995

Alves, Mark. 1995. Tonal features and the development of Vietnamese tones. Working Papers in Linguistics 27. 1–13.

@article{alves1995tonal,
  author  = {Alves, Mark},
  journal = {Working Papers in Linguistics},
  pages   = {1–13},
  title   = {Tonal features and the development of Vietnamese tones},
  volume  = {27},
  year    = {1995}
}