Aftalion, F., & Benfey, O. T. (2001). A history of the international chemical industry (2nd ed.). Philadelphia, PA.: Chemical Heritage Press.
Παραπομπή Chicago StyleAftalion, Fred, and Otto Theodor Benfey. A History of the International Chemical Industry. 2nd ed. Philadelphia, PA.: Chemical Heritage Press, 2001.
Παραπομπή MLAAftalion, Fred, and Otto Theodor Benfey. A History of the International Chemical Industry. 2nd ed. Philadelphia, PA.: Chemical Heritage Press, 2001.
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