APA (7th ed.) Zitazioa
Tubbs, S. L. (1984). A system approch to small group interaction (2nd .ed.). McGrawhill.
Chicago Style (17th ed.) Zitazioa
Tubbs, Stewart L. A System Approch to Small Group Interaction. 2nd .ed. Boston: McGrawhill, 1984.
MLA (9th ed.) Zitazioa
Tubbs, Stewart L. A System Approch to Small Group Interaction. 2nd .ed. McGrawhill, 1984.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.