Cochran, W. G. (1977). Sampling techniques (2nd. ed.). Wiley Eastern.
Citación estilo ChicagoCochran, William G. Sampling Techniques. 2nd. ed. Bangalore: Wiley Eastern, 1977.
Cita MLACochran, William G. Sampling Techniques. 2nd. ed. Wiley Eastern, 1977.
Warning: These citations may not always be 100% accurate.