Som,Ranjan K. (1996). Practical sampling techniques/2nd ed (2nd rev. ed.). Marcel dekker.
Chicago Style aipamenaSom,Ranjan K. Practical Sampling Techniques/2nd Ed. 2nd rev. ed. New York: Marcel dekker, 1996.
MLA aipamenaSom,Ranjan K. Practical Sampling Techniques/2nd Ed. 2nd rev. ed. Marcel dekker, 1996.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.