APA-čujuhus (7. p.)
ebrary, Inc, & Berends, M. (2005). Examining gaps in mathematics achievement among racial-ethnic groups, 1972-1992. RAND Education.
Chicago-čujuhus (17. p.)
ebrary, Inc, juo Mark Berends. Examining Gaps in Mathematics Achievement Among Racial-ethnic Groups, 1972-1992. Santa Monica, CA: RAND Education, 2005.
MLA-čujuhus (9. p.)
ebrary, Inc, juo Mark Berends. Examining Gaps in Mathematics Achievement Among Racial-ethnic Groups, 1972-1992. RAND Education, 2005.
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