ORNSTEIN, M. (2013). A companion to survey research. Sage.
Cita Chicago (17th ed.)ORNSTEIN, Michael. A Companion to Survey Research. Sage, 2013.
Cita MLA (9th ed.)ORNSTEIN, Michael. A Companion to Survey Research. Sage, 2013.
Atenció: Aquestes cites poden no estar 100% correctes.