Reesink, Ger P. 1987. Structures and their Functions in Usan: A Papuan Language of Papua New Guinea. (Studies in Language: Companion Series, 13.) Amsterdam: John Benjamins. xiv+368pp.
@book{gReesinkUsan, author = {Reesink, Ger P.}, pages = {xiv+368}, publisher = {Amsterdam: John Benjamins}, series = {Studies in Language: Companion Series}, title = {Structures and their Functions in Usan: A Papuan Language of Papua New Guinea}, volume = {13}, year = {1987} }