Thompson, S. K. (2012). Sampling (3rd ed.). Wiley.
Chicago Style (17th ed.) ZitazioaThompson, Steven K. Sampling. 3rd ed. Hoboken, N.J.: Wiley, 2012.
MLA (9th ed.) ZitazioaThompson, Steven K. Sampling. 3rd ed. Wiley, 2012.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.