APA Style

author, C, W, N, S. (2003). Ullmann's Encyclopedia of Industrial Chemistry (Sixth Edition). Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA.

MLA Style

author, Collective, Work,, No, Single. "Ullmann's Encyclopedia of Industrial Chemistry". Sixth Edition Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2003. Text.