Gaya APA
An Introduction. (1960).
London:
McGraw Hill Book Company.
Gaya Chicago
An Introduction.
.
London:
McGraw Hill Book Company,
1960.
.
Gaya MLA
An Introduction.
.
London:
McGraw Hill Book Company,
1960.
.
Gaya Turabian
An Introduction.
London:
McGraw Hill Book Company,
1960.
.