Gaya APA
Human Relations Development Ed.3. (1984).
Massachusetts:
NATIONAL BOOK.
Gaya Chicago
Human Relations Development Ed.3.
.
Massachusetts:
NATIONAL BOOK,
1984.
Teks.
Gaya MLA
Human Relations Development Ed.3.
.
Massachusetts:
NATIONAL BOOK,
1984.
Teks.
Gaya Turabian
Human Relations Development Ed.3.
Massachusetts:
NATIONAL BOOK,
1984.
Teks.