The book of the vision quest : personal transformation in the wilderness / Steven Foster ; with Meredith Little. - New York : Prentice Hall press, 1987. - 174 p. ; 22 cm.см.. - (Sun Bear : Metaphysics). - ბიბლიოგრ.: გვ. 170-173. - ISBN 0-13-080110-0[MFN: 41738]