APA Style
Jefkins, Frank. (1992).
Public Relations .
Singapure:
.
Chicago Style
Jefkins, Frank.
Public Relations.
Singapure:
,
1992.
Buku Public Relation.
MLA Style
Jefkins, Frank.
Public Relations.
Singapure:
,
1992.
Buku Public Relation.
Turabian Style
Jefkins, Frank.
Public Relations.
Singapure:
,
1992.
Buku Public Relation.