Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

Weller, Susan C., y A. Kimball Romney. Systematic Data Collection. Newbury Park [etc.]: Sage, 1988.

Cita MLA (9a ed.)

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