APA (7th ed.) Citation

Maxwell, J. C., & Adlie Syamsudin Samsudin. (2011). The 21 indispensable qualities of a leader: 21 kunci pemimpin efektif. PTS Professional Pub.

Chicago Style (17th ed.) Citation

Maxwell, John C., and Adlie Syamsudin Samsudin. The 21 Indispensable Qualities of a Leader: 21 Kunci Pemimpin Efektif. Kuala Lumpur: PTS Professional Pub, 2011.

MLA (8th ed.) Citation

Maxwell, John C., and Adlie Syamsudin Samsudin. The 21 Indispensable Qualities of a Leader: 21 Kunci Pemimpin Efektif. PTS Professional Pub, 2011.