Gaya APA

Snell, F, D., Snell, C. (1962). Dictionary of commercial chemical (1962). : Princetown, D.Van Nostrand Co.Inc.,.

Gaya MLA

Snell, Foster, Dee., Snell, Cornellia. "Dictionary of commercial chemical". 1962 : Princetown, D.Van Nostrand Co.Inc.,, 1962. Text.