Cita APA (7th ed.)

NUNNALLY, J. C. (1981). Psychometric theory.-- ed.2. Tata McGraw hill.

Cita Chicago (17th ed.)

NUNNALLY, Jum C. Psychometric Theory.-- Ed.2. New Delhi: Tata McGraw hill, 1981.

Cita MLA (9th ed.)

NUNNALLY, Jum C. Psychometric Theory.-- Ed.2. Tata McGraw hill, 1981.