APA (7e ed.) Bronvermelding

Elkington, J., Hailes, J., & Makower, J. (1990). The green consumer. Penguin Books.

Chicago (17e ed.) Bronvermelding

Elkington, John, Julia Hailes, en Joel Makower. The Green Consumer. New York, N.Y., U.S.A.: Penguin Books, 1990.

MLA (9e ed.) Bronvermelding

Elkington, John, et al. The Green Consumer. Penguin Books, 1990.