Bormann, E. G. (1969). Discussion and group methods: Theory and practice. Harper & Row.
Lua i Stíl Chicago (17ú heag.)Bormann, Ernest G. Discussion and Group Methods: Theory and Practice. New York: Harper & Row, 1969.
Lua MLA (9ú heag.)Bormann, Ernest G. Discussion and Group Methods: Theory and Practice. Harper & Row, 1969.
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