Não informado. (1968). Behavior Research Methods and Instrumentation. Psychonomic Society.
Lua i Stíl Chicago (17ú heag.)Não informado. Behavior Research Methods and Instrumentation. Austin, Tex: Psychonomic Society, 1968.
Lua MLA (8ú heag.)Não informado. Behavior Research Methods and Instrumentation. Psychonomic Society, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.