Reliability and Validity Assessment Autor Edward G. Carmines et al. noi 1979 Paperback Preț: 318.09 lei 3-5 săpt.
Measurement in the Social Sciences Autor Richard A. Zeller et al. 29 dec 2008 Paperback Preț: 187.17 lei 6-8 săpt. | 6-12 zile