FINK ARLENE. (1995). HOW TO ASK SURVEY QUESTIONS. SAGE PUBLICATIONS.
Lua i Stíl Chicago (17ú heag.)FINK ARLENE. HOW TO ASK SURVEY QUESTIONS. CALIFORNIA: SAGE PUBLICATIONS, 1995.
Lua MLA (9ú heag.)FINK ARLENE. HOW TO ASK SURVEY QUESTIONS. SAGE PUBLICATIONS, 1995.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.