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Lua i Stíl Chicago (17ú heag.)Weltner, Klaus. The Measurement of Verbal Information in Psychology and Education. New York: Springer-Verlag Berlin Heidelberg, 1973.
Lua MLA (9ú heag.)Weltner, Klaus. The Measurement of Verbal Information in Psychology and Education. Springer-Verlag Berlin Heidelberg, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.