@book{Chan-and-Pekkanen-1989,
  address   = {Kota Kinabalu},
  author    = {Chan, Phyllis A. Dunn and Pekkanen, Inka},
  publisher = {Sabah Museum and State Archives Dept},
  title     = {Learn to speak Tatana': a series of twenty-five language lessons},
  year      = {1989}
}