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Pawley, Andrew (2012). Hammarström, Harald; van den Heuvel, Wilco (eds.). "How reconstructable is proto Trans New Guinea? Problems, progress, prospects". History, Contact and Classification of Papuan Languages (Language & Linguistics in Melanesia Special Issue 2012: Part I). Port Moresby, Papua New Guinea: Linguistic Society of Papua New Guinea: 88–164. hdl:1885/38602. ISSN0023-1959.
Pawley, Andrew (2012). Hammarström, Harald; van den Heuvel, Wilco (eds.). "How reconstructable is proto Trans New Guinea? Problems, progress, prospects". History, Contact and Classification of Papuan Languages (Language & Linguistics in Melanesia Special Issue 2012: Part I). Port Moresby, Papua New Guinea: Linguistic Society of Papua New Guinea: 88–164. hdl:1885/38602. ISSN0023-1959.