Tohutoro APA (7th ed.)

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

Tohutoru Kātū Chicago (17th ed.)

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

Tohutoro MLA (9th ed.)

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