Cita APA (7th ed.)

Duffy, B. K., & Besel, R. D. (2016). Green Voices: Defending Nature and the Environment in American Civic Discourse. State University of New York Press.

Cita Chicago (17th ed.)

Duffy, Bernard K., i Richard D. Besel. Green Voices: Defending Nature and the Environment in American Civic Discourse. Albany, NY: State University of New York Press, 2016.

Cita MLA (9th ed.)

Duffy, Bernard K., i Richard D. Besel. Green Voices: Defending Nature and the Environment in American Civic Discourse. State University of New York Press, 2016.