Robert L, Ebel .
Essentials Educational measurement / - 5th ed. - New Jersey : Prentice Hall Inc , 2004. - 370 ; .
9788120307001
371.26 / EBE/ES
Essentials Educational measurement / - 5th ed. - New Jersey : Prentice Hall Inc , 2004. - 370 ; .
9788120307001
371.26 / EBE/ES