Dyfyniad APA

Riegel, E. R., & Kent, J. A. (1992). Riegel's handbook of industrial chemistry (9th ed.). Van Nostrand Reinhold.

Dyfyniad Arddull Chicago

Riegel, Emil Raymond, and James Albert Kent. Riegel's Handbook of Industrial Chemistry. 9th ed. New York: Van Nostrand Reinhold, 1992.

Dyfyniad MLA

Riegel, Emil Raymond, and James Albert Kent. Riegel's Handbook of Industrial Chemistry. 9th ed. Van Nostrand Reinhold, 1992.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.