APA-ийн эшлэл(7 дахь хэвлэлт)

Besel, R. D., & Duffy, B. K. (2016). Green voices: Defending nature and the environment in American civic discourse. State University of New York Press.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

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

MLA -ийн эшлэл (9 дэх хэвлэлт)

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