Παραπομπή APA

Hampel, C. A., & Hawley, G. G. (1973). encyclopaedia of chemistry (3rd ed.). Van Nostrand Reinhold Company.

Παραπομπή Chicago Style

Hampel, Clifford A., και Gessner G. Hawley. Encyclopaedia of Chemistry. 3rd ed. New York: Van Nostrand Reinhold Company, 1973.

Παραπομπή MLA

Hampel, Clifford A., και Gessner G. Hawley. Encyclopaedia of Chemistry. 3rd ed. Van Nostrand Reinhold Company, 1973.