Gaya APA
COOPER, DONALD. (2003).
BUSINESS RESEARCH METHODS EIGHTH EDITION .
NEW YORK:
MCGRAW HILL.
Gaya Chicago
COOPER, DONALD.
BUSINESS RESEARCH METHODS EIGHTH EDITION.
NEW YORK:
MCGRAW HILL,
2003.
Text.
Gaya MLA
COOPER, DONALD.
BUSINESS RESEARCH METHODS EIGHTH EDITION.
NEW YORK:
MCGRAW HILL,
2003.
Text.
Gaya Turabian
COOPER, DONALD.
BUSINESS RESEARCH METHODS EIGHTH EDITION.
NEW YORK:
MCGRAW HILL,
2003.
Print.