DuBois and DuBois 1991

DuBois, Carl D. and DuBois, Lauretta J. 1991. Tagabawa Grammar Essentials. Summer Institute of Linguistics. (Accessed: 23 December 2023).

https://www.sil.org/resources/archives/43888

@book{bonmannsymmetrical-dubois1991tagabawa,
  author    = {DuBois, Carl D. and DuBois, Lauretta J.},
  note      = {Accessed: 23 December 2023},
  publisher = {Summer Institute of Linguistics},
  title     = {Tagabawa Grammar Essentials},
  url       = {https://www.sil.org/resources/archives/43888},
  year      = {1991}
}