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.) CitationLean, Glendon A. Counting Systems of Papua New Guinea: Research Bibliography. Lae: Department of Mathematics. Papua New Guinea University of Technology, 1985.
MLA引文Lean, Glendon A. Counting Systems of Papua New Guinea: Research Bibliography. Department of Mathematics. Papua New Guinea University of Technology, 1985.
警告：這些引文格式不一定是100％准確.