Cita APA (7a ed.)

Marshall, C., & Rossman, G. B. (1990). Designing qualitative research (4. print.). Sage.

Cita Chicago Style (17a ed.)

Marshall, Catherine, y Gretchen B. Rossman. Designing Qualitative Research. 4. print. Newbury Park [u.a.]: Sage, 1990.

Cita MLA (8a ed.)

Marshall, Catherine, y Gretchen B. Rossman. Designing Qualitative Research. 4. print. Sage, 1990.