Gaya APA
Cram, Tony. (1994).
The power of relationship marketing : how to keep customers for life .
London:
Ashridge.
Gaya Chicago
Cram, Tony.
The power of relationship marketing : how to keep customers for life.
London:
Ashridge,
1994.
Text.
Gaya MLA
Cram, Tony.
The power of relationship marketing : how to keep customers for life.
London:
Ashridge,
1994.
Text.
Gaya Turabian
Cram, Tony.
The power of relationship marketing : how to keep customers for life.
London:
Ashridge,
1994.
Print.