Lua APA (7ú heag.)

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

Lua i Stíl Chicago (17ú heag.)

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

Lua MLA (9ú heag.)

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

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