Παραπομπή APA

Harnett, D. L. (1972). Introduction to statistical methods. Addison Wesley.

Παραπομπή Chicago Style

Harnett, Donald L. Introduction to Statistical Methods. Reading: Addison Wesley, 1972.

Παραπομπή MLA

Harnett, Donald L. Introduction to Statistical Methods. Addison Wesley, 1972.