Johnson, D. W., & Johnson, F. P. (1982). Joining together: Group theory and group skills (2nd ed.). Prentice-Hall.
Chicago Style (17. basım) AtıfJohnson, David W., ve Frank P. Johnson. Joining Together: Group Theory and Group Skills. 2nd ed. Englewood Cliffs, N.J: Prentice-Hall, 1982.
MLA (9th ed.) AtıfJohnson, David W., ve Frank P. Johnson. Joining Together: Group Theory and Group Skills. 2nd ed. Prentice-Hall, 1982.
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