Cita APA

Evans, P. A., & Skupa, G. L. (1981). International directory of documentation services concerning forestry and forest products. Berkeley: Pacific Southwest forest and Range experiment station.

Citación estilo Chicago

Evans, Peter A., y Gary L. Skupa. International Directory of Documentation Services Concerning Forestry and Forest Products. Berkeley: Pacific Southwest forest and Range experiment station, 1981.

Cita MLA

Evans, Peter A., y Gary L. Skupa. International Directory of Documentation Services Concerning Forestry and Forest Products. Berkeley: Pacific Southwest forest and Range experiment station, 1981.