Barbour, Rosaline (2014). Introducing qualitative research : a student's guide 2nd ed.. Sage Pub..
Barbour, Rosaline Introducing qualitative research : a student's guide 2nd ed.. Sage Pub., 2014.
Barbour, Rosaline, "Introducing qualitative research : a student's guide 2nd ed.," Sage Pub., 2014.