Gaya APA
Richardson, John E. (1999).
MARKETING .
America:
Mc Graw-Hill.
Gaya Chicago
Richardson, John E.
MARKETING.
America:
Mc Graw-Hill,
1999.
Text.
Gaya MLA
Richardson, John E.
MARKETING.
America:
Mc Graw-Hill,
1999.
Text.
Gaya Turabian
Richardson, John E.
MARKETING.
America:
Mc Graw-Hill,
1999.
Print.