Gaya APA
VAYNERCHUK, Gary. (2011).
The thank you economy .
New York:
Harper Business.
Gaya Chicago
VAYNERCHUK, Gary.
The thank you economy.
New York:
Harper Business,
2011.
Text.
Gaya MLA
VAYNERCHUK, Gary.
The thank you economy.
New York:
Harper Business,
2011.
Text.
Gaya Turabian
VAYNERCHUK, Gary.
The thank you economy.
New York:
Harper Business,
2011.
Print.