APA (7th ed.) Citation

Summer Institute of Linguistics. Papua New Guinea Branch. (1977). Language variation and survey techniques. Summer Institute of Linguistics.

Chicago Style (17th ed.) Citation

Summer Institute of Linguistics. Papua New Guinea Branch. Language Variation and Survey Techniques. Ukarumpa: Summer Institute of Linguistics, 1977.

MLA (9th ed.) Citation

Summer Institute of Linguistics. Papua New Guinea Branch. Language Variation and Survey Techniques. Summer Institute of Linguistics, 1977.