Citazione Stile APA (7a Edizione)

Pickering, K. T., & Owen, L. A. (1997). An introduction to global environmental issues (2nd ed.). Routledge.

Citazione stile Chigago Style (17a edizione)

Pickering, K. T., e Lewis A. Owen. An Introduction to Global Environmental Issues. 2nd ed. London, New York: Routledge, 1997.

Citatione MLA (9a ed.)

Pickering, K. T., e Lewis A. Owen. An Introduction to Global Environmental Issues. 2nd ed. Routledge, 1997.