Covey, Stephen R., author
Binarupa Aksara, 1997
Buku Teks
Krishnamurti, J. (Jiddu), 1895-1986, author
Yayasan Krisnamurti Indonesia, 2010
Buku Teks
Covey, Stephen R., author
Gramedia, 2007
Buku Teks
Ray, James Arthur, author
Gramedia Pustaka Utama, 2009
Buku Teks
Cheng Qinhua, compiler ; Nita Iskandar, translator
Gramedia Pustaka Utama, 2011
Buku Teks