Ullmann, F., & Gerhartz, W. (1988). Ullmann's encyclopedia of industrial chemistry / executive editor Wolfgang Gerhartz (5th completely rev. ed.). VCH.
Chicago Style (17th ed.) CitationUllmann, Fritz, and Wolfgang Gerhartz. Ullmann's Encyclopedia of Industrial Chemistry / Executive Editor Wolfgang Gerhartz. 5th completely rev. ed. VCH, 1988.
MLA (9th ed.) CitationUllmann, Fritz, and Wolfgang Gerhartz. Ullmann's Encyclopedia of Industrial Chemistry / Executive Editor Wolfgang Gerhartz. 5th completely rev. ed. VCH, 1988.
Warning: These citations may not always be 100% accurate.