Cita APA

Elvers, B., Hawkins, S., & Schulz, G. (1992). Ullmann's encyclopedia of industrial chemistry VCH.

Citación estilo Chicago

Elvers, Bárbara,, Stephen Hawkins, and Gail Schulz. Ullmann's Encyclopedia of Industrial Chemistry. 5th completely rev ed. Weinheim: VCH, 1992.

Cita MLA

Elvers, Bárbara,, Stephen Hawkins, and Gail Schulz. Ullmann's Encyclopedia of Industrial Chemistry. 5th completely rev ed. Weinheim: VCH, 1992.