Main, T. F. Knowledge, Learning and Freedom from Thought. Australian & New Zealand Journal of Psychiatry. 1967, 1 (2): 64–71. ISSN 0004-8674. doi:10.3109/00048676709159167.
Main, T. F. Knowledge, Learning and Freedom from Thought. Australian & New Zealand Journal of Psychiatry. 1967, 1 (2): 64–71. ISSN 0004-8674. doi:10.3109/00048676709159167.