Landreth, G. L. (1991). Play therapy: The art of the relationship. Accelerated Development.
Chicago-viite (17. p.)Landreth, Garry L. Play Therapy: The Art of the Relationship. Muncie, Ind: Accelerated Development, 1991.
MLA-viite (9. p.)Landreth, Garry L. Play Therapy: The Art of the Relationship. Accelerated Development, 1991.
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