Freud, S. Group psychology and the analysis of the ego / Auszug: Sigmund Freud. Literary theory : an anthology.(1998).
Lua i Stíl Chicago (17ú heag.)Freud, Sigmund. "Group Psychology and the Analysis of the Ego / Auszug: Sigmund Freud." Literary Theory : An Anthology.(1998) .
Lua MLA (8ú heag.)Freud, Sigmund. "Group Psychology and the Analysis of the Ego / Auszug: Sigmund Freud." Literary Theory : An Anthology.(1998), .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.