APA (7e ed.) Bronvermelding

Shimo-Barry, A. (2008). The environment equation: 100 factors that can add to or subtract from your total carbon footprint. New Holland Publishers.

Chicago (17e ed.) Bronvermelding

Shimo-Barry, Alex. The Environment Equation: 100 Factors That Can Add to or Subtract from Your Total Carbon Footprint. London: New Holland Publishers, 2008.

MLA (9e ed.) Bronvermelding

Shimo-Barry, Alex. The Environment Equation: 100 Factors That Can Add to or Subtract from Your Total Carbon Footprint. New Holland Publishers, 2008.