International Congress of Applied Psychology Liège, International Association of Applied Psychology, & Piret, R. (1972). Actes. Proceedings. Editest.
Čikaški stil citiranja (17. izdanje)International Congress of Applied Psychology Liège, International Association of Applied Psychology, i Roger Piret. Actes. Proceedings. Bruxelles: Editest, 1972.
MLA način citiranja (8. izdanje)International Congress of Applied Psychology Liège, et al. Actes. Proceedings. Editest, 1972.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.