Gaya APA
Walther, George R.. (1994).
Upside-Down marketing : turning your ex customers into your best customers .
New York:
McGraw-Hill.
Gaya Chicago
Walther, George R..
Upside-Down marketing : turning your ex customers into your best customers.
New York:
McGraw-Hill,
1994.
Text.
Gaya MLA
Walther, George R..
Upside-Down marketing : turning your ex customers into your best customers.
New York:
McGraw-Hill,
1994.
Text.
Gaya Turabian
Walther, George R..
Upside-Down marketing : turning your ex customers into your best customers.
New York:
McGraw-Hill,
1994.
Print.