Cooper, Gregory. 1981. "A Sociolinguistic Survey of Beli, Yahang and Laeko-Libuat." In Sociolinguistic surveys of Sepik languages, edited by Richard Loving. 29: 141-161. Summer Institute of Linguistics.
Cook, Carolyn Diane Turinsky. The Amung Way: the Subsistence Strategies, the Knowledge and the Dilemma of the Tsinga Valley People in Irian Jaya, Indonesia. PhD thesis, University of Hawai'i, 1995.
Conrad, Robert J. and Kepas Wogiga. 1991. "An Outline of Bukiyip Grammar." 113: Canberra: Research School of Pacific and Asian Studies, Australian National University.
Robert J. Conrad and Ronald K. Lewis. 1988. "Some Language and Sociolinguistic Relationships in the Upper Sepik Region of Papua New Guinea." In Papers in New Guinea Linguistics 26, 76: 243-273. Canberra: Research School of Pacific and Asian Studies, Australian National University.
Robert J. Conrad and T. Wayne Dye. 1975. "Some Language Relationships in the Upper Sepik Region of Papua New Guinea." In Papers in New Guinea Linguistics 18, 40: 1-35. Canberra: Research School of Pacific and Asian Studies, Australian National University.
Clynes, Adrian. 2005. "Belait." In The Austronesian Languages of Asia and Madagascar, edited by Alexander Adelaar and Nikolaus Himmelmann. 429-455. London & New York: Routledge.
Clouse, Heljä and Duane Clouse. 1993. "Kirikiri and the Western Lakes Plain Languages: Selected Phonological Phenomena." In Language and Linguistics in Melanesia, 24: 1-18.
Clifton, J. M. 1995. "A Grammar Sketch of the Kaki Ae Language." In University of North Dakota Session, edited by Albert J. Bickfield. 39: 33-80. Grand Forks, North Dakota: Summer Institute of Linguistics.
