Wurm & Harris 1963. Wurm, Stephen A.; Harris, J. B. (1963). Police Motu: an introduction to the trade language of Papua (New Guinea) for anthropologists and other fieldworkers. Pacific Linguistics Series B, No. 1. Canberra: Australian National University. doi:10.15144/PL-B1. hdl:1885/146425. ISBN9780858830349.
Hammarström, Harald; Forkel, Robert; Haspelmath, Martin, eds. (2017). "Hiri Motu Trading Eleman". Glottolog 3.0. Jena, Germany: Max Planck Institute for the Science of Human History. Hammarström, Harald; Forkel, Robert; Haspelmath, Martin, eds. (2017). "Hiri Motu Trading Koriki". Glottolog 3.0. Jena, Germany: Max Planck Institute for the Science of Human History.
Wurm & Harris 1963. Wurm, Stephen A.; Harris, J. B. (1963). Police Motu: an introduction to the trade language of Papua (New Guinea) for anthropologists and other fieldworkers. Pacific Linguistics Series B, No. 1. Canberra: Australian National University. doi:10.15144/PL-B1. hdl:1885/146425. ISBN9780858830349.