APA (7th ed.) Citation

Ullmann, F., Gerhartz, W., & Ullmann, F. (1985). Ullmann's encyclopedia of industrial chemistry (5th, completely revised edition.). VCH.

Chicago Style (17th ed.) Citation

Ullmann, Fritz., Wolfgang Gerhartz, and Fritz Ullmann. Ullmann's Encyclopedia of Industrial Chemistry. 5th, completely revised edition. Weinheim, Federal Republic of Germany : Deerfield Beach, FL, USA: VCH, 1985.

MLA (9th ed.) Citation

Ullmann, Fritz., et al. Ullmann's Encyclopedia of Industrial Chemistry. 5th, completely revised edition. VCH, 1985.