Gaya APA
W, E.
(1960).
instrumental methods of chemical analysis
(
4th.ed)
.
tokyo:
mcGRAW-HILL Kogakusha,LTD.
Gaya MLA
W, EWING,Galen.
"instrumental methods of chemical analysis".
4th.ed
tokyo:
mcGRAW-HILL Kogakusha,LTD,
1960.
Text.