APA (7th ed.) Citation

Summer Institute of Linguistics. Papua New Guinea & Roberts, J. R. (1992). Namia and Amanab grammar essentials. Summer Institute of Linguistics.

Chicago Style (17th ed.) Citation

Summer Institute of Linguistics. Papua New Guinea and John R. Roberts. Namia and Amanab Grammar Essentials. Ukarumpa, Papua New Guinea: Summer Institute of Linguistics, 1992.

MLA (9th ed.) Citation

Summer Institute of Linguistics. Papua New Guinea and John R. Roberts. Namia and Amanab Grammar Essentials. Summer Institute of Linguistics, 1992.