APA (7th ed.) Citation

Jones, P. L., & Papua New Guinea University of Technology. Department of Mathematics. (1979). A study of proportional reasoning. Papua New Guinea University of Technology, Dept. of Mathematics.

Chicago Style (17th ed.) Citation

Jones, Peter L., and Papua New Guinea University of Technology. Department of Mathematics. A Study of Proportional Reasoning. Lae: Papua New Guinea University of Technology, Dept. of Mathematics, 1979.

MLA (9th ed.) Citation

Jones, Peter L., and Papua New Guinea University of Technology. Department of Mathematics. A Study of Proportional Reasoning. Papua New Guinea University of Technology, Dept. of Mathematics, 1979.