Cita APA (7a ed.)

O'Riordan, T. (1981). Environmentalism (2nd rev. ed.). Pion.

Cita Chicago Style (17a ed.)

O'Riordan, Timothy. Environmentalism. 2nd rev. ed. London: Pion, 1981.

Cita MLA (9a ed.)

O'Riordan, Timothy. Environmentalism. 2nd rev. ed. Pion, 1981.