APA (7th ed.) Citation

Lean, G. A. (1985). Counting systems of Papua New Guinea (Draft ed.). PNG University of Technology.

Chicago Style (17th ed.) Citation

Lean, Glendon A. Counting Systems of Papua New Guinea. Draft ed. Lae: PNG University of Technology, 1985.

MLA (9th ed.) Citation

Lean, Glendon A. Counting Systems of Papua New Guinea. Draft ed. PNG University of Technology, 1985.