Gaya APA
The Bedford Guide for College Writers. (1987).
:
.
Gaya Chicago
The Bedford Guide for College Writers.
.
:
,
1987.
Text.
Gaya MLA
The Bedford Guide for College Writers.
.
:
,
1987.
Text.
Gaya Turabian
The Bedford Guide for College Writers.
:
,
1987.
Print.