APA (7th ed.) Citation

Ullmann, F., & Gerhartz, W. (1987). Ullmann's encyclopedia of industrial chemistry (5th, completely rev. ed.). VCH.

Chicago Style (17th ed.) Citation

Ullmann, Fritz, and Wolfgang Gerhartz. Ullmann's Encyclopedia of Industrial Chemistry. 5th, completely rev. ed. VCH, 1987.

MLA (9th ed.) Citation

Ullmann, Fritz, and Wolfgang Gerhartz. Ullmann's Encyclopedia of Industrial Chemistry. 5th, completely rev. ed. VCH, 1987.

Warning: These citations may not always be 100% accurate.