APA (7th ed.) Citation

Lean, G. A. (1985). Counting systems of Papua New Guinea, volume 1: New Ireland Province (Draft edition.). PNG University of Technology.

Chicago Style (17th ed.) Citation

Lean, Glendon A. Counting Systems of Papua New Guinea, Volume 1: New Ireland Province. Draft edition. Lae: PNG University of Technology, 1985.

MLA (9th ed.) Citation

Lean, Glendon A. Counting Systems of Papua New Guinea, Volume 1: New Ireland Province. Draft edition. PNG University of Technology, 1985.