Gaya APA

Bower, B, T. et al (1981). Incentives in Water Quality Management France and the Ruhr Area1 . Wasington ,D.C: Resources For The Future Washington, D.C..

Gaya MLA

Bower, Blair, T.. et al. "Incentives in Water Quality Management France and the Ruhr Area1". Wasington ,D.C: Resources For The Future Washington, D.C., 1981. Text.