Williams, D. L. (1981). Border crossings: A psychological perspective on Carlos Castaneda's path of knowledge. Inner City Books.
Tohutoru Kātū Chicago (17th ed.)Williams, Donald Lee. Border Crossings: A Psychological Perspective on Carlos Castaneda's Path of Knowledge. Toronto, Canada: Inner City Books, 1981.
Tohutoro MLA (9th ed.)Williams, Donald Lee. Border Crossings: A Psychological Perspective on Carlos Castaneda's Path of Knowledge. Inner City Books, 1981.
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