1. Adams, R. J., Wu, M. L., Macaskill, G., Haldane, S. A., & Sun, X. X. (2016). ACER ConQuest version 4.5.0: Generalized item response modeling software. Camberwell, Australia: Australian Council for Educational Research and Berkeley: University of California (2016).
2. Ajzen, I. (1991). The theory of planned behavior. Organizational Behavior and Human Decision Processes, 50, 179–211. https://doi.org/10.1016/0749-5978(91)90020-T.
3. American Educational Research Association (AERA), American Psychological Association (APA), and National Council for Measurement in Psychology (NCME). (2014). Standards for educational and psychological testing. Washington, DC: American Psychological Association.
4. Apanga, P. A., & Adam, M. A. (2015). Factors influencing the uptake of family planning services in the Talensi District Ghana. The Pan African Medical Journal, 20, 10. https://doi.org/10.11604/pamj.2015.20.10.5301.
5. Bandura, A. (1989). Human agency in social cognitive theory. American Psychologist, 44, 1175–1184. https://doi.org/10.1037/0003-066X.44.9.1175.