APA (7th ed.) Citation

Lean, G. A. (1986). Counting systems of Papua New Guinea: Research bibliography (3rd ed.). PNG University of Technology.

Chicago Style (17th ed.) Citation

Lean, Glendon A. Counting Systems of Papua New Guinea: Research Bibliography. 3rd ed. Lae: PNG University of Technology, 1986.

MLA (9th ed.) Citation

Lean, Glendon A. Counting Systems of Papua New Guinea: Research Bibliography. 3rd ed. PNG University of Technology, 1986.