ORNSTEIN, A. C. (2018). Curriculum: Foundations, principles, and issues. Pearson Education.
Lua i Stíl Chicago (17ú heag.)ORNSTEIN, Allan C. Curriculum: Foundations, Principles, and Issues. Pearson Education, 2018.
Lua MLA (9ú heag.)ORNSTEIN, Allan C. Curriculum: Foundations, Principles, and Issues. Pearson Education, 2018.
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