[Fullan, M. (2006) Uudne arusaam haridusmuutustest [New approach to educational changes]. Tallinn: Atlex.]Search in Google Scholar
[Guidelines and Recommendations for Reorienting Teacher Education to Address Sustainability (2005) Education for Sustainable Development in Action, Technical Paper No. 2 UNESCO Education Sector.]Search in Google Scholar
[Maslow, A.H. (1970) Motivation and Personality (2nd ed.). New York: Harper & Row Publishers.]Search in Google Scholar
[Peavy, V.R. (2002) Sotsiodünaamiline nõustamine [Sociodynamic counselling]. Tallinn: Eesti Tööhõiveamet.]Search in Google Scholar
[Strauss, A. & Corbin, J. (1998) Basics of Qualitative Research Techniques and Procedures for Developing Grounded Theory (2nd ed.). London, Thousand Oaks, New Dehli: Sage Publications.]Search in Google Scholar
[Выготский, Л.С. (2000) Психология [Psychology]. Москва: Эксмо Пресс.]Search in Google Scholar
[Маслоу, А.Г. (2002) Дальние пределы человеческой психики [Further limits of human psyche]. Санкт-Петербург: Евразия.]Search in Google Scholar