Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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