Gaya APA
Tracy, Brian. (2014).
Leadership .
America:
AMACOM.
Gaya Chicago
Tracy, Brian.
Leadership.
America:
AMACOM,
2014.
Text.
Gaya MLA
Tracy, Brian.
Leadership.
America:
AMACOM,
2014.
Text.
Gaya Turabian
Tracy, Brian.
Leadership.
America:
AMACOM,
2014.
Print.