Cita APA (7th ed.)

Ash, I., & Ash, M. (1996). Handbook of water treatment chemicals: An international guide to more than 3,400 products by trade name, chemical, function, and manufacturer. Gower.

Cita Chicago (17th ed.)

Ash, Irene, i Michael Ash. Handbook of Water Treatment Chemicals: An International Guide to More than 3,400 Products by Trade Name, Chemical, Function, and Manufacturer. Aldershot, England: Gower, 1996.

Cita MLA (9th ed.)

Ash, Irene, i Michael Ash. Handbook of Water Treatment Chemicals: An International Guide to More than 3,400 Products by Trade Name, Chemical, Function, and Manufacturer. Gower, 1996.