Lua APA (7ú heag.)

(1993). Some Psychological Aspects of Distance Education Rudolf Schuemer. [microform].

Lua i Stíl Chicago (17ú heag.)

Some Psychological Aspects of Distance Education Rudolf Schuemer. [microform]. 1993.

Lua MLA (9ú heag.)

Some Psychological Aspects of Distance Education Rudolf Schuemer. [microform]. 1993.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.