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              Baker, F. (2001). The Basics of Item Response Theory. ERIC Clearinghouse on Assessment and Evaluation, University of Maryland, College Park, MD.
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              Baker, F. B. (2001). The basics of item response theory (2nd ed.). ERIC. http://ericae.net/irt/baker
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              Baker, Frank B. (2001). The Basics of Item Response Theory. Segunda edición. ERIC Clearinghouse on Assessment and Evaluation.
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              Hambleton, R. K., H. Swaminathan and H. J. Rogers. 1991. Fundaments of Item Response Theory. London: Sage Publications.
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              Hambleton, R.K. Swaminathan, H. & Rogers, H.J. (1991): Fundamentals of Item Response Theory. Newbury Park, CA: Sage.
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              Hambleton, R. K. S., H., Rogers, H. J. (2001). Fundamentals of Item Response Theory. College Park, MD: ERIC Clearinghouse on Assessment and Evaluation, University of Maryland. Segunda edición. ERIC Clearinghouse on Assessment and Evaluation.
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