APA (7th ed.) Citation

Bulfin, R. L., & Weaver, H. L. (1977). Appropriate technology for natural resources development (ed.). The University of Arizona.

Chicago Style (17th ed.) Citation

Bulfin, Robert L., and Harry L. Weaver. Appropriate Technology for Natural Resources Development. ed. Tucson: The University of Arizona, 1977.

MLA (9th ed.) Citation

Bulfin, Robert L., and Harry L. Weaver. Appropriate Technology for Natural Resources Development. ed. The University of Arizona, 1977.