Lenk, J. D. (1994). McGraw-Hill electronic testing handbook: Procedures and techniques. McGraw Hill.
Tohutoru Kātū Chicago (17th ed.)Lenk, John D. McGraw-Hill Electronic Testing Handbook: Procedures and Techniques. Nueva York: McGraw Hill, 1994.
Tohutoro MLA (9th ed.)Lenk, John D. McGraw-Hill Electronic Testing Handbook: Procedures and Techniques. McGraw Hill, 1994.
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