APA-referens (7:e uppl.)

Gray, N. F. (2005). Water technology: An introduction for environmental scientists and engineers (Second edition.). Elsevier/Butterworth-Heinemann.

Chicago-referens (17:e uppl.)

Gray, N. F. Water Technology: An Introduction for Environmental Scientists and Engineers. Second edition. Oxford: Elsevier/Butterworth-Heinemann, 2005.

MLA-referens (8:e uppl.)

Gray, N. F. Water Technology: An Introduction for Environmental Scientists and Engineers. Second edition. Elsevier/Butterworth-Heinemann, 2005.