Gaya APA

Covey, S. et al (2001). The 7 habits of highly effective teens 7 kebiasaan remaja yang sangat efektif (The 7 habits of highly effective teens) . : .

Gaya MLA

Covey, Sean. et al. "The 7 habits of highly effective teens 7 kebiasaan remaja yang sangat efektif (The 7 habits of highly effective teens)". : , 2001. Text.