Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

Weller, Susan C., et al. "Systematic Data Collection." Qualitative Research Methods, 1988.