1) Adom, D., Adu-Gyamfi, S., Agyekum, K., Ayarkwa, J., Dwumah, P., Abass, K., ... & Osei-Poku, P. (2016). Theoretical and conceptual framework: Mandatory ingredients of a quality research. Journal of Education and Human Development, 5(3), 158-172
2) Swanson, Richard A. Theory Building in Applied Disciplines. San Francisco, CA: Berrett-Koehler Publishers 2013.
3) Sire, J. (2004). Naming the Elephant: Worldview as a Concept. Downers Grove, IL: InterVasity. Grant, C. & Osanloo, A. (2014)
5)Formulating and Evaluating Theoretical Frameworks for Career and Technical Education Research. Journal of Vocational Educational Research, 26(1), Maxwell, J. (2004).