Citazione Stile APA (7a Edizione)

Johnson, R. W., & Brown, G. M. (1976). Cleaning up Europe's waters: Economics, management and policies. Praeger.

Citazione stile Chigago Style (17a edizione)

Johnson, Ralph Whitney, e Gardner Mallard Brown. Cleaning Up Europe's Waters: Economics, Management and Policies. New York: Praeger, 1976.

Citatione MLA (9a ed.)

Johnson, Ralph Whitney, e Gardner Mallard Brown. Cleaning Up Europe's Waters: Economics, Management and Policies. Praeger, 1976.