David, M., & Sutton, C. D. (2010). Social research: An introduction (2nd ed.). SAGE.
Lua i Stíl Chicago (17ú heag.)David, Matthew, agus Carole D. Sutton. Social Research: An Introduction. 2nd ed. London: SAGE, 2010.
Lua MLA (8ú heag.)David, Matthew, agus Carole D. Sutton. Social Research: An Introduction. 2nd ed. SAGE, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.