Citação norma APA
Hofmann, H. (1990). Ullmann's Encyclopedia of Industrial Chemistry. Fifth, Completely Revised Edition: Volume B1: Fundamentals of Chemical Engineering. VCH.
Citação norma Chicago
Hofmann, Hanns. Ullmann's Encyclopedia of Industrial Chemistry. Fifth, Completely Revised Edition: Volume B1: Fundamentals of Chemical Engineering. Weinheim: VCH, 1990.
Citação norma MLA
Hofmann, Hanns. Ullmann's Encyclopedia of Industrial Chemistry. Fifth, Completely Revised Edition: Volume B1: Fundamentals of Chemical Engineering. VCH, 1990.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.