Lua APA (7ú heag.)

International Congress of Applied Psychology Liège, International Association of Applied Psychology, & Piret, R. (1972). Actes. Proceedings. Editest.

Lua i Stíl Chicago (17ú heag.)

International Congress of Applied Psychology Liège, International Association of Applied Psychology, agus Roger Piret. Actes. Proceedings. Bruxelles: Editest, 1972.

Lua MLA (8ú heag.)

International Congress of Applied Psychology Liège, et al. Actes. Proceedings. Editest, 1972.

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