APA (7th ed.) Citation

Wassmann, J., & Keck, V. (1995). Historical atlas of ethnic and linguistic groups in Papua New Guinea. Institute of Ethnology.

Chicago Style (17th ed.) Citation

Wassmann, Jurg, and Verena Keck. Historical Atlas of Ethnic and Linguistic Groups in Papua New Guinea. Basel, Switzerland: Institute of Ethnology, 1995.

MLA (9th ed.) Citation

Wassmann, Jurg, and Verena Keck. Historical Atlas of Ethnic and Linguistic Groups in Papua New Guinea. Institute of Ethnology, 1995.