APA (7th ed.) Citation

Summer Institute of Linguistics. Papua New Guinea Branch & Healey, A. (1975). Language learner's field guide. Summer Institute of Linguistics.

Chicago Style (17th ed.) Citation

Summer Institute of Linguistics. Papua New Guinea Branch and Alan Healey. Language Learner's Field Guide. Ukarumpa, Papua New Guinea: Summer Institute of Linguistics, 1975.

MLA (9th ed.) Citation

Summer Institute of Linguistics. Papua New Guinea Branch and Alan Healey. Language Learner's Field Guide. Summer Institute of Linguistics, 1975.