APA (7th ed.) Citation

Ruff, W., & Ruff, R. (1980). Village studies. Part 1, introduction & chronology: A personal report. PNG University of Technology.

Chicago Style (17th ed.) Citation

Ruff, Wallace, and Ruth Ruff. Village Studies. Part 1, Introduction & Chronology: A Personal Report. [Lae]: PNG University of Technology, 1980.

MLA (9th ed.) Citation

Ruff, Wallace, and Ruth Ruff. Village Studies. Part 1, Introduction & Chronology: A Personal Report. PNG University of Technology, 1980.