Cita APA (7th ed.)

Crabtree, B. F. M. (1999). Doing qualitative research (2nd-ed.). SAGE Publications, Inc.

Cita Chicago (17th ed.)

Crabtree, Benjamin F. Miller. Doing Qualitative Research. 2nd-ed. London: SAGE Publications, Inc, 1999.

Cita MLA (8th ed.)

Crabtree, Benjamin F. Miller. Doing Qualitative Research. 2nd-ed. SAGE Publications, Inc, 1999.