Gaya APA
Horowitz, Ben. (2014).
The Hard Thing About Hard Things .
New York:
Harper Collins.
Gaya Chicago
Horowitz, Ben.
The Hard Thing About Hard Things.
New York:
Harper Collins,
2014.
Text.
Gaya MLA
Horowitz, Ben.
The Hard Thing About Hard Things.
New York:
Harper Collins,
2014.
Text.
Gaya Turabian
Horowitz, Ben.
The Hard Thing About Hard Things.
New York:
Harper Collins,
2014.
Print.