Phillips, G. M., Pedersen, D. J., & Wood, J. T. (1979). Group discussion, a practical guide to participation and leadership. Houghton Mifflin.
Chicago-čujuhus (17. p.)Phillips, Gerald M., Douglas J. Pedersen, juo Julia T. Wood. Group Discussion, a Practical Guide to Participation and Leadership. Boston: Houghton Mifflin, 1979.
MLA-čujuhus (9. p.)Phillips, Gerald M., et al. Group Discussion, a Practical Guide to Participation and Leadership. Houghton Mifflin, 1979.
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