Gaya APA
Precalculus. (1988).
California:
Dellen Publishing Company.
Gaya Chicago
Precalculus.
.
California:
Dellen Publishing Company,
1988.
.
Gaya MLA
Precalculus.
.
California:
Dellen Publishing Company,
1988.
.
Gaya Turabian
Precalculus.
California:
Dellen Publishing Company,
1988.
.