FINK ARLENE. (1995). HOW TO ASK SURVEY QUESTIONS. SAGE PUBLICATIONS.
Cita Chicago (17th ed.)FINK ARLENE. HOW TO ASK SURVEY QUESTIONS. CALIFORNIA: SAGE PUBLICATIONS, 1995.
Cita MLA (9th ed.)FINK ARLENE. HOW TO ASK SURVEY QUESTIONS. SAGE PUBLICATIONS, 1995.
Atenció: Aquestes cites poden no estar 100% correctes.