Gaya APA
HILL, Winfred F. (1970).
Psychology : Principles and Problems .
New York:
J.B.Lippincott Company.
Gaya Chicago
HILL, Winfred F.
Psychology : Principles and Problems.
New York:
J.B.Lippincott Company,
1970.
Teks.
Gaya MLA
HILL, Winfred F.
Psychology : Principles and Problems.
New York:
J.B.Lippincott Company,
1970.
Teks.
Gaya Turabian
HILL, Winfred F.
Psychology : Principles and Problems.
New York:
J.B.Lippincott Company,
1970.
Teks.