APA (7th ed.) Citation

Siegel, J. (1982). Traditional bridges of Papua New Guinea. Appropriate Technology Development Institute, Papua New Guinea University of Technology.

Chicago Style (17th ed.) Citation

Siegel, Jeff. Traditional Bridges of Papua New Guinea. Lae: Appropriate Technology Development Institute, Papua New Guinea University of Technology, 1982.

MLA (9th ed.) Citation

Siegel, Jeff. Traditional Bridges of Papua New Guinea. Appropriate Technology Development Institute, Papua New Guinea University of Technology, 1982.