Não informado. (1981). Behaviour analysis letters. Elsevier Biomedical Press.
Lua i Stíl Chicago (17ú heag.)Não informado. Behaviour Analysis Letters. Amsterdam: Elsevier Biomedical Press, 1981.
Lua MLA (8ú heag.)Não informado. Behaviour Analysis Letters. Elsevier Biomedical Press, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.