Powell, S. T. (1954). Water conditioning for industry. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Powell, Sheppard T. Water Conditioning for Industry. Nueva York: McGraw-Hill, 1954.
Lua MLA (9ú heag.)Powell, Sheppard T. Water Conditioning for Industry. McGraw-Hill, 1954.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.