Gaya APA
Purple Cow : Transform Your Business. (2003).
:
.
Gaya Chicago
Purple Cow : Transform Your Business.
.
:
,
2003.
Text.
Gaya MLA
Purple Cow : Transform Your Business.
.
:
,
2003.
Text.
Gaya Turabian
Purple Cow : Transform Your Business.
:
,
2003.
Print.