Cita APA (7th ed.)
Black, T. R. (2002). Understanding social science research (2nd ed.). Sage.
Cita Chicago (17th ed.)
Black, Thomas R. Understanding Social Science Research. 2nd ed. London ; Thousand Oaks: Sage, 2002.
Cita MLA (9th ed.)
Black, Thomas R. Understanding Social Science Research. 2nd ed. Sage, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.