Gaya APA
J.M.COULSON, ., UNDERWOOD, R, D, J, /, A. (1989).
CHEMICAL ENGINEERING .
SINGAPORE:
MAXWELL MACMILLAN INTERNATIONAL EDITIONAL.
Gaya MLA
J.M.COULSON, ., UNDERWOOD, R.A., DAY, JR, /, A.L..
"CHEMICAL ENGINEERING".
SINGAPORE:
MAXWELL MACMILLAN INTERNATIONAL EDITIONAL,
1989.
Text.