Παραπομπή APA

Hays, W. L. (1981). Statistics (3rd. ed.). Holt Saunders.

Παραπομπή Chicago Style

Hays, William L. Statistics. 3rd. ed. Tokyo: Holt Saunders, 1981.

Παραπομπή MLA

Hays, William L. Statistics. 3rd. ed. Holt Saunders, 1981.