Gaya APA

Donald, C. (1987). The New Ilustrated Science And Invention Encyclopedia: Volume 6: detergent manufacture electrolysis . London: H.S. Stuttman Inc.

Gaya MLA

Donald, CLARKE.. "The New Ilustrated Science And Invention Encyclopedia: Volume 6: detergent manufacture electrolysis". London: H.S. Stuttman Inc, 1987. Text.