APA (7th ed.) Citation

Summer Institute of Linguistics. (1974). Phonologies of four Papua New Guinea languages. Summer Institute of Linguistics.

Chicago Style (17th ed.) Citation

Summer Institute of Linguistics. Phonologies of Four Papua New Guinea Languages. Ukarumpa: Summer Institute of Linguistics, 1974.

MLA (9th ed.) Citation

Summer Institute of Linguistics. Phonologies of Four Papua New Guinea Languages. Summer Institute of Linguistics, 1974.

Warning: These citations may not always be 100% accurate.