Cita APA (7th ed.)

Humphrey, C. R., Lewis, T. L., & Buttel, F. H. (2002). Environment, energy, and society: A new synthesis. Wadsworth Thomson Learning.

Cita Chicago (17th ed.)

Humphrey, Craig R., Tammy L. Lewis, i Frederick H. Buttel. Environment, Energy, and Society: A New Synthesis. Belmont, CA: Wadsworth Thomson Learning, 2002.

Cita MLA (9th ed.)

Humphrey, Craig R., et al. Environment, Energy, and Society: A New Synthesis. Wadsworth Thomson Learning, 2002.