Gaya APA
COOPER, DONALD. (1998).
BUSINESS RESEARCH METHODS .
NEW YORK:
MCGRAW HILL.
Gaya Chicago
COOPER, DONALD.
BUSINESS RESEARCH METHODS.
NEW YORK:
MCGRAW HILL,
1998.
Text.
Gaya MLA
COOPER, DONALD.
BUSINESS RESEARCH METHODS.
NEW YORK:
MCGRAW HILL,
1998.
Text.
Gaya Turabian
COOPER, DONALD.
BUSINESS RESEARCH METHODS.
NEW YORK:
MCGRAW HILL,
1998.
Print.