Covey, Stephen R., author
Gramedia, 2007
Buku Teks
Krishnamurti, J. (Jiddu), 1895-1986, author
Yayasan Krisnamurti Indonesia, 2011
Buku Teks
Ray, James Arthur, author
Gramedia Pustaka Utama, 2009
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Kubler-Ross, Elisabeth, author
Haru Media Sejahtera, 2022
Buku Teks
Indra Gunawan, author
Gramedia Pustaka Utama, 2004
Buku Teks