SINHA S N. (1994). RESEARCH METHODOLOGY IN BEHAVIOURAL SCIENCE. CONCEPT PUBLICATION.
Lua i Stíl Chicago (17ú heag.)SINHA S N. RESEARCH METHODOLOGY IN BEHAVIOURAL SCIENCE. NEW DELHI: CONCEPT PUBLICATION, 1994.
Lua MLA (9ú heag.)SINHA S N. RESEARCH METHODOLOGY IN BEHAVIOURAL SCIENCE. CONCEPT PUBLICATION, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.