Citazione Stile APA (7a Edizione)

Ellms, J. W. (1917). Water purification. McGraw-Hill.

Citazione stile Chigago Style (17a edizione)

Ellms, Joseph Wilton. Water Purification. New York: McGraw-Hill, 1917.

Citatione MLA (8a ed.)

Ellms, Joseph Wilton. Water Purification. McGraw-Hill, 1917.