Groves, R. M., Biemer, P. P., Lyeberg, L. E., Massey, J. T., Nicholls, W., & Waksberg, J. (1988). Telephone survey methodology. John Wiley.
Chicago Style (17th ed.) ZitazioaGroves, Robert M., Paul P. Biemer, Lars E. Lyeberg, James T. Massey, Williams Nicholls, eta Joseph Waksberg. Telephone Survey Methodology. Nueva York: John Wiley, 1988.
MLA (9th ed.) ZitazioaGroves, Robert M., et al. Telephone Survey Methodology. John Wiley, 1988.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.