Gaya APA
Harari, O. (2002).
The Leadership Secrets Of Colin Powell (ed. i).
new york:
Akademi Komunitas Perkebunan Yogyakarta.
Gaya MLA
Harari, O..
The Leadership Secrets Of Colin Powell.
ed. i
new york:
Akademi Komunitas Perkebunan Yogyakarta,
2002.
Text.