Cita APA (7a ed.)

Ryan, W. J. (1937). Water tratmentand purification. McGraw-Hill.

Cita Chicago Style (17a ed.)

Ryan, William J. Water Tratmentand Purification. New York: McGraw-Hill, 1937.

Cita MLA (8a ed.)

Ryan, William J. Water Tratmentand Purification. McGraw-Hill, 1937.