American Institutes for Research(AIR) (2018) CBAM: The concerns-based adoption model. Retrieved fromhttps://www.air.org/resource/cbam-concerns-based-adoption-model
Hall G. E., Dirksen D. J., George A. A. (2008) Measuring implementation in schools: Levels of use. Austin, TX: Southwest Educational Development Laboratory.
Spear G. E., Mocker D. W. (1984) The organizing circumstance: Environmental determinants in self-directed learning. Adult Education Quarterly, 35(1), 1–10.