Gaya APA
Management Personalia. (1976).
Medan:
Ghalia Indonesia.
Gaya Chicago
Management Personalia.
Cet. 5.
Medan:
Ghalia Indonesia,
1976.
.
Gaya MLA
Management Personalia.
Cet. 5.
Medan:
Ghalia Indonesia,
1976.
.
Gaya Turabian
Management Personalia.
Medan:
Ghalia Indonesia,
1976.
.