Gaya APA
Ries, Al. (2005).
Focus : the future of your company depends on it .
Newyork:
Collins business essential.
Gaya Chicago
Ries, Al.
Focus : the future of your company depends on it.
Newyork:
Collins business essential,
2005.
Text.
Gaya MLA
Ries, Al.
Focus : the future of your company depends on it.
Newyork:
Collins business essential,
2005.
Text.
Gaya Turabian
Ries, Al.
Focus : the future of your company depends on it.
Newyork:
Collins business essential,
2005.
Print.