Lyberg, L., Biemer, P., Collins, M., Leeuw, E. D., Dippo, C., Schwarz, N., & Trewin, D. (1997). Survey measurement and process quality. Wiley.
Chicago Style (17th ed.) ZitazioaLyberg, Lars, Paul Biemer, Martin Collins, Edith De Leeuw, Cathryn Dippo, Norbert Schwarz, eta Dennis Trewin. Survey Measurement and Process Quality. Nueva York: Wiley, 1997.
MLA (9th ed.) ZitazioaLyberg, Lars, et al. Survey Measurement and Process Quality. Wiley, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.