APA (7e ed.) Bronvermelding

Cleveland Cutler J., O<U+0092>Connor Peter A., & Sustainability Institute. Energy return on investment (EROI) of oil shale.

Chicago (17e ed.) Bronvermelding

Cleveland Cutler J., O<U+0092>Connor Peter A., en Sustainability Institute. Energy Return on Investment (EROI) of Oil Shale.

MLA (9e ed.) Bronvermelding

Cleveland Cutler J., et al. Energy Return on Investment (EROI) of Oil Shale.