Cita APA

Gilbert, D. L. (1971). Natural resources and public relations (2a. ed.). Washington, D. C.: Wildlife Society.

Citación estilo Chicago

Gilbert, Douglas L. Natural Resources and Public Relations. 2a. ed. Washington, D. C.: Wildlife Society, 1971.

Cita MLA

Gilbert, Douglas L. Natural Resources and Public Relations. 2a. ed. Washington, D. C.: Wildlife Society, 1971.