Crotty,, M. (1998). Foundations of social research (1st.). Sage.
Chicago Edition CitationCrotty,, Michael. Foundations of Social Research. 1st. London: Sage, 1998.
Cita MLACrotty,, Michael. Foundations of Social Research. 1st. Sage, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.