Goodwin, J. (2012). Sage secondary data analysis. SAGE.
Cita Chicago (17th ed.)Goodwin, John. Sage Secondary Data Analysis. Los Angeles: SAGE, 2012.
Cita MLA (9th ed.)Goodwin, John. Sage Secondary Data Analysis. SAGE, 2012.
Atenció: Aquestes cites poden no estar 100% correctes.