Citazione Stile APA (7a Edizione)

Steel, E. W. (1960). Water supply and sewerage (4th ed.). McGraw-Hill.

Citazione stile Chigago Style (17a edizione)

Steel, Ernest. W. Water Supply and Sewerage. 4th ed. New York: McGraw-Hill, 1960.

Citatione MLA (9a ed.)

Steel, Ernest. W. Water Supply and Sewerage. 4th ed. McGraw-Hill, 1960.