Gaya APA
WALLEN, Norman E., FRAENKEL, Jack R.. (1991).
Educational reserch: A guide to the process .
America:
MacGrow Hill.
Gaya Chicago
WALLEN, Norman E., FRAENKEL, Jack R..
Educational reserch: A guide to the process.
America:
MacGrow Hill,
1991.
BUKU.
Gaya MLA
WALLEN, Norman E., FRAENKEL, Jack R..
Educational reserch: A guide to the process.
America:
MacGrow Hill,
1991.
BUKU.
Gaya Turabian
WALLEN, Norman E., FRAENKEL, Jack R..
Educational reserch: A guide to the process.
America:
MacGrow Hill,
1991.
BUKU.