APA
Gray N. F., . (2005). Water Technology : Introduction for environmental Scientists and engineers. New York: Elsevier.
Chicago
Gray N F, . 2005. Water Technology : Introduction for environmental Scientists and engineers. New York: Elsevier.
Harvard
Gray N. F., . (2005). Water Technology : Introduction for environmental Scientists and engineers. New York: Elsevier.
MLA
Gray N F, . Water Technology : Introduction for environmental Scientists and engineers. New York: Elsevier. 2005.