Izard.J.D. (1992). Assessing learning achievement. UNESCO.
Чикаго маягийн жагсаалтIzard.J.D. Assessing Learning Achievement. Paris: UNESCO, 1992.
MLA ишлэлIzard.J.D. Assessing Learning Achievement. UNESCO, 1992.
Warning: These citations may not always be 100% accurate.