Citazione Stile APA (7a Edizione)

Pepper, D. (1984). The roots of modern environmentalism. Routledge.

Citazione stile Chigago Style (17a edizione)

Pepper, David. The Roots of Modern Environmentalism. London: Routledge, 1984.

Citatione MLA (9a ed.)

Pepper, David. The Roots of Modern Environmentalism. Routledge, 1984.