The Walio–Papi or Leonhard Schultze languages were a small proposed family of Papuan languages in Donald Laycock's Sepik–Ramu proposal. They consisted of two branches, four Walio languages and two Papi languages. Malcolm Ross retains them in his Sepik family, but not together. See Sepik languages for details.
- Ross, Malcolm (2005). "Pronouns as a preliminary diagnostic for grouping Papuan languages". In Andrew Pawley; Robert Attenborough; Robin Hide; Jack Golson. Papuan pasts: cultural, linguistic and biological histories of Papuan-speaking peoples. Canberra: Pacific Linguistics. pp. 15–66. ISBN 0858835622. OCLC 67292782.
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