Gaya APA

Crowl, D, A., Louvar, J, F. (1990). Chemical process safety. fundamentals with applications. (1990). : Engllewoods Clift : Prentice Hall,.

Gaya MLA

Crowl, Daniel, A.., Louvar, Joseph, F.. "Chemical process safety. fundamentals with applications.". 1990 : Engllewoods Clift : Prentice Hall,, 1990. Text.