Kimbali, Charles
Mizan Media Utama (MMU), 2003
Buku Teks SO
Ausubel, Kenny
Healing arts Press, 2000
Buku Teks SO
Saradananda, Swami
Duncan Baird Publishers, 2009
Buku Teks SO
Ilana Tan
PT Gramedia Pustaka Utama, 2012
Buku Teks SO
selected and translated from the original Sanskrit by Swami Prabhavananda and Frederick Manchester
Mentor Books, 1957
Buku Teks SO