Gaya APA
College Chemistry. (1964).
San Franscisco:
WH Freeman and Company.
Gaya Chicago
College Chemistry.
Ed.3.
San Franscisco:
WH Freeman and Company,
1964.
.
Gaya MLA
College Chemistry.
Ed.3.
San Franscisco:
WH Freeman and Company,
1964.
.
Gaya Turabian
College Chemistry.
San Franscisco:
WH Freeman and Company,
1964.
.