APA Style

Vries, L, D., Vries-Wiersma, R, D. (1992). The morphology of Wambon of the Irian Jaya Upper-Digul area: with an introduction to its phonology . Leiden: KITLV Press.

MLA Style

Vries, Lourens, De., Vries-Wiersma, Robinia, De. "The morphology of Wambon of the Irian Jaya Upper-Digul area: with an introduction to its phonology". Leiden: KITLV Press, 1992. Text.