Gaya APA
Cooper, Donald. (2003).
Business Research Methods .
New York:
Mc Graw Hill.
Gaya Chicago
Cooper, Donald.
Business Research Methods.
New York:
Mc Graw Hill,
2003.
Text.
Gaya MLA
Cooper, Donald.
Business Research Methods.
New York:
Mc Graw Hill,
2003.
Text.
Gaya Turabian
Cooper, Donald.
Business Research Methods.
New York:
Mc Graw Hill,
2003.
Print.