Παραπομπή APA

Cochran, W. G. (1977). Sampling techniques (3rd ed.). Wiley Eastern.

Παραπομπή Chicago Style

Cochran, William G. Sampling Techniques. 3rd ed. New Delhi: Wiley Eastern, 1977.

Παραπομπή MLA

Cochran, William G. Sampling Techniques. 3rd ed. Wiley Eastern, 1977.