Green,Judith Browne, J. (2005). Principles of social research. Tata McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Green,Judith Browne, John. Principles of Social Research. New Delhi: Tata McGraw-Hill, 2005.
Lua MLA (8ú heag.)Green,Judith Browne, John. Principles of Social Research. Tata McGraw-Hill, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.