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2. Abraha, A. (2012). Gender inequality in tertiary education in Ethiopia; mediating the transition to university through the development of adaptive competencies (Working paper). Center for universal education.
3. Andriani, L. (2013). Social capital: A Road map of theoretical frameworks and empirical limitations (Working papers in management). Birkbeck University of London.
4. Emerging adulthood: A theory of development from the late teens through the twenties.
5. G. Stanley Hall's Adolescence: Brilliance and nonsense.