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.