Gaya APA

Kotter, J, P., Suminto, H. (1997). The leadership factor = faktor kepemimpinan . Jakarta: PT. Prenhallindo The Free Prees.

Gaya MLA

Kotter, John, P.., Suminto, Hari. "The leadership factor = faktor kepemimpinan". Jakarta: PT. Prenhallindo The Free Prees, 1997. Text.