Gaya APA
WALKER, ORVILLE C.. (2003).
MARKETING STRATEGY FOURTH EDITION .
USA:
MCGRAW HILL.
Gaya Chicago
WALKER, ORVILLE C..
MARKETING STRATEGY FOURTH EDITION.
USA:
MCGRAW HILL,
2003.
Text.
Gaya MLA
WALKER, ORVILLE C..
MARKETING STRATEGY FOURTH EDITION.
USA:
MCGRAW HILL,
2003.
Text.
Gaya Turabian
WALKER, ORVILLE C..
MARKETING STRATEGY FOURTH EDITION.
USA:
MCGRAW HILL,
2003.
Print.