Gordon, T., & Sands, J. G. (1976). P.E.T. in action. Bantam Books.
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Chicago-čujuhus (17. p.)
Gordon, Thomas, juo Juduth Gordon Sands. P.E.T. in Action. Toronto: Bantam Books, 1976.
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MLA-čujuhus (9. p.)
Gordon, Thomas, juo Juduth Gordon Sands. P.E.T. in Action. Bantam Books, 1976.
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