APA (7th ed.) Citation

Lean, G. A. (1985). Counting systems of Papua New Guinea: Research bibliography. Department of Mathematics. Papua New Guinea University of Technology.

Chicago Style (17th ed.) Citation

Lean, Glendon A. Counting Systems of Papua New Guinea: Research Bibliography. Lae: Department of Mathematics. Papua New Guinea University of Technology, 1985.

MLA (9th ed.) Citation

Lean, Glendon A. Counting Systems of Papua New Guinea: Research Bibliography. Department of Mathematics. Papua New Guinea University of Technology, 1985.