Harari, Oren
The leadership secrets of Colin Powell=sebuah paradigma baru kepemimpinan
Gramedia Pustaka Utama,, 2003
 Buku Teks SO
Powell, Colin L.
Perjalanan seorang Amerika=My American journey : an autobiography
Angkasa, 2001
 Buku Teks SO
Sharow, Alexander S.
Edwin Hubble, the discoverer of the Big Bang universe
Cambridge University Press, 1989
 Buku Teks SO
Harari, Oren
The Powell principles: 24 lessons from colin powell, a legendary leader
McGraw-Hill, 2003
 Buku Teks SO
Reader's digest condensed books. 1-4
The Reader's Digest Association
The Reader`s Digest Association, 1967
 Buku Teks SO