Reference: Thurgood and LaPolla 2016

Thurgood, Graham & Randy J LaPolla. 2016. The sino-tibetan languages. Taylor & Francis.

@book{thurgood2016sino,
  author    = {Thurgood, Graham and LaPolla, Randy J},
  publisher = {Taylor & Francis},
  title     = {The sino-tibetan languages},
  year      = {2016}
}