APA استشهاد

Cochran, W. G. (1963). Sampling techniques (2nd.). Wiley Eastern private Limited.

استشهاد بنمط شيكاغو

Cochran, William G. Sampling Techniques. 2nd. Newdelhi: Wiley Eastern private Limited, 1963.

MLA استشهاد

Cochran, William G. Sampling Techniques. 2nd. Wiley Eastern private Limited, 1963.