Gaya APA
W.EWING, G. (1985).
INSTRUMENTAL METHODES OF CHEMICAL ANALYSIS .
Singapore:
MCGRAW-HILL INTERNATIONAL EDITIONS.
Gaya MLA
W.EWING, GALEN.
"INSTRUMENTAL METHODES OF CHEMICAL ANALYSIS".
Singapore:
MCGRAW-HILL INTERNATIONAL EDITIONS,
1985.
Textbook.