Sarndal, . C., & Lundström, S. (2005). Estimation in Surveys with nonresponse. wiley.
Chicago Style aipamenaSarndal, Carl-Erik, and Sixten Lundström. Estimation in Surveys with Nonresponse. wiley, 2005.
MLA aipamenaSarndal, Carl-Erik, and Sixten Lundström. Estimation in Surveys with Nonresponse. wiley, 2005.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.