Gaya APA
Leedy, Paul D.. (1974).
PRACTICAL RESEARCH; Planning and Design .
New York:
MACMILLAN PUBLISHING COMPANY.
Gaya Chicago
Leedy, Paul D..
PRACTICAL RESEARCH; Planning and Design.
New York:
MACMILLAN PUBLISHING COMPANY,
1974.
Text.
Gaya MLA
Leedy, Paul D..
PRACTICAL RESEARCH; Planning and Design.
New York:
MACMILLAN PUBLISHING COMPANY,
1974.
Text.
Gaya Turabian
Leedy, Paul D..
PRACTICAL RESEARCH; Planning and Design.
New York:
MACMILLAN PUBLISHING COMPANY,
1974.
Print.