Gaya APA

D.Ducommun, J. (2007). Safe handling of light ends: a collection of booklets describing hazards how to manage them (5). UK: Ichem Engin..

Gaya MLA

D.Ducommun, Jesse. "Safe handling of light ends: a collection of booklets describing hazards how to manage them". 5 UK: Ichem Engin., 2007. Text.