Citazione APA

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

Stile di citazione Chicago

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

Citazione MLA

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