APA (7e ed.) Bronvermelding

Makower, J., Elkington, J., & Hailes, J. (1991). The green consumer supermarket guide. Penguin Books.

Chicago (17e ed.) Bronvermelding

Makower, Joel, John Elkington, en Julia Hailes. The Green Consumer Supermarket Guide. New York, N.Y., U.S.A.: Penguin Books, 1991.

MLA (9e ed.) Bronvermelding

Makower, Joel, et al. The Green Consumer Supermarket Guide. Penguin Books, 1991.