Gray, N. F. (2010). Water technology: An introduction for environmental scientists and engineers (3rd ed.). Butterworth-Heinemann.
Lua i Stíl Chicago (17ú heag.)Gray, N. F. Water Technology: An Introduction for Environmental Scientists and Engineers. 3rd ed. Amsterdam: Butterworth-Heinemann, 2010.
Lua MLA (9ú heag.)Gray, N. F. Water Technology: An Introduction for Environmental Scientists and Engineers. 3rd ed. Butterworth-Heinemann, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.