APA Style

Purvis, J., Hodgson, T. (2015). The Chemical Examination of Water; Sewage and Foods and Other Substances . Cambridge: Cambridge Universitas.press.

MLA Style

Purvis, J.E., Hodgson, T.R. "The Chemical Examination of Water; Sewage and Foods and Other Substances". Cambridge: Cambridge Universitas.press, 2015. Text.