Cita APA (7th ed.)

Ritchie, J., & Lewis, J. (2003). Qualitative research practice: A guide for social science students and researchers. London : Sage Pubs.

Cita Chicago (17th ed.)

Ritchie, Jane, i Jane Lewis. Qualitative Research Practice: A Guide for Social Science Students and Researchers. London : Sage Pubs, 2003.

Cita MLA (9th ed.)

Ritchie, Jane, i Jane Lewis. Qualitative Research Practice: A Guide for Social Science Students and Researchers. London : Sage Pubs, 2003.