Cita APA (7a ed.)

Weller, S. C., & Romney, A. (1988). Systematic data collection. Qualitative research methods.

Cita Chicago Style (17a ed.)

Weller, Susan C., y Antone Romney. "Systematic Data Collection." Qualitative Research Methods 1988.

Cita MLA (9a ed.)

Weller, Susan C., y Antone Romney. "Systematic Data Collection." Qualitative Research Methods, 1988.