Παραπομπή APA

Levy, P. S., & Lemeshow, S. (2008). Sampling of populations: Methods and applications (4th ed.). John Wiley.

Παραπομπή Chicago Style

Levy, Paul S., και Stanley Lemeshow. Sampling of Populations: Methods and Applications. 4th ed. New Jersey: John Wiley, 2008.

Παραπομπή MLA

Levy, Paul S., και Stanley Lemeshow. Sampling of Populations: Methods and Applications. 4th ed. John Wiley, 2008.