Gaya APA
Leedy, Paul D.. (1974).
Pratical Research Planning and Design .
New York:
Macmillan Publishing Co..
Gaya Chicago
Leedy, Paul D..
Pratical Research Planning and Design.
New York:
Macmillan Publishing Co.,
1974.
Text.
Gaya MLA
Leedy, Paul D..
Pratical Research Planning and Design.
New York:
Macmillan Publishing Co.,
1974.
Text.
Gaya Turabian
Leedy, Paul D..
Pratical Research Planning and Design.
New York:
Macmillan Publishing Co.,
1974.
Print.