Gaya APA
LEEDY, Paul. (1974).
Practical research : planning and design .
New York:
Macmillan Publishing.
Gaya Chicago
LEEDY, Paul.
Practical research : planning and design.
New York:
Macmillan Publishing,
1974.
Text.
Gaya MLA
LEEDY, Paul.
Practical research : planning and design.
New York:
Macmillan Publishing,
1974.
Text.
Gaya Turabian
LEEDY, Paul.
Practical research : planning and design.
New York:
Macmillan Publishing,
1974.
Print.