Gaya APA
J.R.Backhurst, ., Harker, J, H. (1982).
Chemical Engineering Solutions to the Problems in Volume 1 Volume.4 (S1 Units) .
oxford:
Pergamon.
Gaya MLA
J.R.Backhurst, ., Harker, J., H..
"Chemical Engineering Solutions to the Problems in Volume 1 Volume.4 (S1 Units)".
oxford:
Pergamon,
1982.
Text.