Dueñas , E., & Valenzuela, C. (2022). A look at school time and the single school day. A review of empirical research. Universidad Pedagógica y Tecnológica de Colombia.
Chicago Style (17. basım) AtıfDueñas , Elizabeth, ve Carlos Valenzuela. A Look at School Time and the Single School Day. A Review of Empirical Research. Universidad Pedagógica y Tecnológica de Colombia, 2022.
MLA (9th ed.) AtıfDueñas , Elizabeth, ve Carlos Valenzuela. A Look at School Time and the Single School Day. A Review of Empirical Research. Universidad Pedagógica y Tecnológica de Colombia, 2022.
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