Shunryu Suzuki, Mel Weitsman, Michael Wenger (1999). “Branching Streams Flow in the Darkness: Zen Talks on the Sandokai”, p.30, Univ of California Press
Jiddu Krishnamurti (1998). “You are the World: Authentic Report of Talks and Discussions in American Universities”, p.6, Krishnamurti Foundation Trust Ltd.