APA (7th ed.) Citation

Summer Institute of Linguistics. Papua New Guinea Branch. (1981). Sociolinguistic surveys of Sepik languages. Summer Institute of Linguistics.

Chicago Style (17th ed.) Citation

Summer Institute of Linguistics. Papua New Guinea Branch. Sociolinguistic Surveys of Sepik Languages. Ukarumpa: Summer Institute of Linguistics, 1981.

MLA (9th ed.) Citation

Summer Institute of Linguistics. Papua New Guinea Branch. Sociolinguistic Surveys of Sepik Languages. Summer Institute of Linguistics, 1981.