Gaya APA
Tracy, Brian. (2013).
Motivation .
New York and London:
Amacon.
Gaya Chicago
Tracy, Brian.
Motivation.
New York and London:
Amacon,
2013.
.
Gaya MLA
Tracy, Brian.
Motivation.
New York and London:
Amacon,
2013.
.
Gaya Turabian
Tracy, Brian.
Motivation.
New York and London:
Amacon,
2013.
.