APA (7th ed.) Citation

Lean, G. A. (1986). Counting systems of Papua New Guinea, volume 9: Enga, Western Highlands, Simbu (Draft edition.). PNG University of Technology.

Chicago Style (17th ed.) Citation

Lean, Glendon A. Counting Systems of Papua New Guinea, Volume 9: Enga, Western Highlands, Simbu. Draft edition. Lae: PNG University of Technology, 1986.

MLA (9th ed.) Citation

Lean, Glendon A. Counting Systems of Papua New Guinea, Volume 9: Enga, Western Highlands, Simbu. Draft edition. PNG University of Technology, 1986.