Gaya APA

Covey, C, M, S., Huling, J. (2012). The 4 Disciplines of Execution (Edisi Pertama). Jakarta: DUNAMIS INTRA SARANA.

Gaya MLA

Covey, Chris, McChesney,, Sean., Huling, Jim. "The 4 Disciplines of Execution". Edisi Pertama Jakarta: DUNAMIS INTRA SARANA, 2012. Text.