Sjoberg,Gideon Nett,Roger. (2002). A methodology for social research. Rawat.
Cita Chicago (17th ed.)Sjoberg,Gideon Nett,Roger. A Methodology for Social Research. New Delhi: Rawat, 2002.
Cita MLA (8th ed.)Sjoberg,Gideon Nett,Roger. A Methodology for Social Research. Rawat, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.