Gaya APA
KERLINGER, Fred N.. (1973).
Foundations of behavioral research : second edition .
New York:
New York Univ..
Gaya Chicago
KERLINGER, Fred N..
Foundations of behavioral research : second edition.
New York:
New York Univ.,
1973.
.
Gaya MLA
KERLINGER, Fred N..
Foundations of behavioral research : second edition.
New York:
New York Univ.,
1973.
.
Gaya Turabian
KERLINGER, Fred N..
Foundations of behavioral research : second edition.
New York:
New York Univ.,
1973.
.