Chang, R., & Tikkanen, W. (1988). The Top Fifty Industrial Chemicals. New York: Random House.
Trích dẫn kiểu ChicagoChang, Raymond, và Wayne Tikkanen. The Top Fifty Industrial Chemicals. New York: Random House, 1988.
Deismireacht MLAChang, Raymond, và Wayne Tikkanen. The Top Fifty Industrial Chemicals. New York: Random House, 1988.
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