Cita APA

Weller, S. C., & Romney, A. K. (1988). Systematic data collection. Sage Publications.

Chicago Edition Citation

Weller, Susan C., i A. Kimball Romney. Systematic Data Collection. London: Sage Publications, 1988.

Cita MLA

Weller, Susan C., i A. Kimball Romney. Systematic Data Collection. Sage Publications, 1988.