Gaya APA
BECKWITH, Harry. (1997).
SELLING THE INVISIBLE; A FIELD GUIDE TO MODERN MARKETING .
:
.
Gaya Chicago
BECKWITH, Harry.
SELLING THE INVISIBLE; A FIELD GUIDE TO MODERN MARKETING.
:
,
1997.
Text.
Gaya MLA
BECKWITH, Harry.
SELLING THE INVISIBLE; A FIELD GUIDE TO MODERN MARKETING.
:
,
1997.
Text.
Gaya Turabian
BECKWITH, Harry.
SELLING THE INVISIBLE; A FIELD GUIDE TO MODERN MARKETING.
:
,
1997.
Print.