Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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