Gaya APA

Hamka, ., Morgan, H, H, P, D, G, M. (2006). The Art Dan Practice Of Leadership Coaching . Tangerang: PT. Agromedia Pustaka.

Gaya MLA

Hamka, ., Morgan, Howard.,, Harkins,, Phil, Dan, Goldsmith,, Marshal. "The Art Dan Practice Of Leadership Coaching". Tangerang: PT. Agromedia Pustaka, 2006. Text.