Bryman, A. (2012). Social research methods (4th ed.). Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Bryman, Alan. Social Research Methods. 4th ed. Oxford ; New York: Oxford University Press, 2012.
Lua MLA (8ú heag.)Bryman, Alan. Social Research Methods. 4th ed. Oxford University Press, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.