Reference: Tuite 1999

Tuite, Kevin. 1999. The myth of the Caucasian Sprachbund: The case of ergativity. Lingua 108(1). 1–29.

https://www.sciencedirect.com/science/article/pii/S0024384198000370

@article{tuite1999caucasian,
  author  = {Kevin Tuite},
  journal = {Lingua},
  number  = {1},
  pages   = {1–29},
  title   = {The myth of the Caucasian Sprachbund: The case of ergativity},
  url     = {https://www.sciencedirect.com/science/article/pii/S0024384198000370},
  volume  = {108},
  year    = {1999}
}