Porter 1977

Porter, Doris. 1977. A Tboli Grammar. Manila: Linguistic Society of the Philippines. (Online: \url{https://www.sil.org/resources/archives/25541}, accessed 23 December 2023).

@book{bonmannsymmetrical-porter1977tboli,
  address   = {Manila},
  author    = {Porter, Doris},
  note      = {Online: \url{https://www.sil.org/resources/archives/25541}, accessed 23 December 2023},
  publisher = {Linguistic Society of the Philippines},
  title     = {A Tboli Grammar},
  year      = {1977}
}