Elvers, B., Rounsaville, J. F., & Schulz, G. (1989). Ullmann's encyclopedia of industrial chemistry editors, Barbara Elvers ... (et al.) (5th completely rev. ed.). VCH.
Chicago Style (17th ed.) CitationElvers, Barbara, James F. Rounsaville, and Gail Schulz. Ullmann's Encyclopedia of Industrial Chemistry Editors, Barbara Elvers ... (et Al.). 5th completely rev. ed. VCH, 1989.
MLA (9th ed.) CitationElvers, Barbara, et al. Ullmann's Encyclopedia of Industrial Chemistry Editors, Barbara Elvers ... (et Al.). 5th completely rev. ed. VCH, 1989.
Warning: These citations may not always be 100% accurate.