Sweeney, D. R. (1989). Overcoming insonmia: A medical program for problem sleepers. G. P. Putnam's Sons.
Chicago-čujuhus (17. p.)Sweeney, Donald R. Overcoming Insonmia: A Medical Program for Problem Sleepers. G. P. Putnam's Sons, 1989.
MLA-čujuhus (9. p.)Sweeney, Donald R. Overcoming Insonmia: A Medical Program for Problem Sleepers. G. P. Putnam's Sons, 1989.
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