Tselos, G. D., & Wickey, C. (1987). A guide to archives and manuscript collections in the history of chemistry and chemical technology. Philadelphia, PA: Center for History of Chemistry.

Tselos, George D., and Colleen Wickey. A Guide to Archives and Manuscript Collections in the History of Chemistry and Chemical Technology. Philadelphia, PA: Center for History of Chemistry, 1987.

Tselos, George D., and Colleen Wickey. A Guide to Archives and Manuscript Collections in the History of Chemistry and Chemical Technology. Philadelphia, PA: Center for History of Chemistry, 1987.