Dyfyniad APA

Helbing, W., & Burkart, A. (1979). Chemical tables for laboratory and industry. Wiley Eastern.

Dyfyniad Arddull Chicago

Helbing, Wolfgang, and Adolf Burkart. Chemical Tables for Laboratory and Industry. New Delhi: Wiley Eastern, 1979.

Dyfyniad MLA

Helbing, Wolfgang, and Adolf Burkart. Chemical Tables for Laboratory and Industry. Wiley Eastern, 1979.

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