Παραπομπή APA

Gray, N. F. (2008). Drinking water quality: Problems and solutions (2nd ed.). Cambridge University Press.

Παραπομπή Chicago Style

Gray, N. F. Drinking Water Quality: Problems and Solutions. 2nd ed. Cambridge ; New York: Cambridge University Press, 2008.

Παραπομπή MLA

Gray, N. F. Drinking Water Quality: Problems and Solutions. 2nd ed. Cambridge University Press, 2008.