APA
Backhurst J R, . (2006). Chemical Engg. : Butterworth New Delhi.
Chicago
Backhurst J R, . 2006. Chemical Engg. : Butterworth New Delhi.
Harvard
Backhurst J R, . (2006). Chemical Engg. : Butterworth New Delhi.
MLA
Backhurst J R, . Chemical Engg. : Butterworth New Delhi. 2006.