Cita APA (7th ed.)

Mann, H. T., & Williamson, D. (1976). Water treatment and sanitation: A handbook of simple methods for rural areas in developing countries (Revised ed.). Intermediate Technology Publications.

Cita Chicago (17th ed.)

Mann, H. T., i D. Williamson. Water Treatment and Sanitation: A Handbook of Simple Methods for Rural Areas in Developing Countries. Revised ed. London: Intermediate Technology Publications, 1976.

Cita MLA (8th ed.)

Mann, H. T., i D. Williamson. Water Treatment and Sanitation: A Handbook of Simple Methods for Rural Areas in Developing Countries. Revised ed. Intermediate Technology Publications, 1976.