1. Voiculescu F, Voiculescu, E. Timpul ca resursă a educatiei. Alba Iulia: Editura Aeternitas, 2011.
2. Cristea S. Dictionar de pedagogie. Chişinău: Editura Litera International, 2002.
3. Bloom,BS. Human characteristics and school learning. New York: McGraw-Hill, 1976.
4. Carroll JB. A model of school learning. Teacher College Record, 1963, 64: 723-733.
5. Trautwein U, Köller, O. The relationship between homework and achievement e still much of a mystery. Educational Psychology Review, 2003, 15:115-145.