Maruyama, G., & Ryan, C. S. (2014). Research methods in social relations (Eighth edition.). Wiley Blackwell.
Lua i Stíl Chicago (17ú heag.)Maruyama, Geoffrey, agus Carey S. Ryan. Research Methods in Social Relations. Eighth edition. Chichester, [England]: Wiley Blackwell, 2014.
Lua MLA (9ú heag.)Maruyama, Geoffrey, agus Carey S. Ryan. Research Methods in Social Relations. Eighth edition. Wiley Blackwell, 2014.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.