APA Style
Adair, John Eric. (2007).
Develop Your Leadership Skills-2nd edisi .
United States America:
Kogan Page.
Chicago Style
Adair, John Eric.
Develop Your Leadership Skills-2nd edisi.
United States America:
Kogan Page,
2007.
Text.
MLA Style
Adair, John Eric.
Develop Your Leadership Skills-2nd edisi.
United States America:
Kogan Page,
2007.
Text.
Turabian Style
Adair, John Eric.
Develop Your Leadership Skills-2nd edisi.
United States America:
Kogan Page,
2007.
Print.