1. ACS Examinations Institute, (2014), American Chemical Society Division of Chemical Education, First Term Organic Chemistry (Form 2014), Ames, IA: Iowa State University
2. Akaike H., (1974), A new look at the statistical model identification, IEEE Trans. Automat. Contr., 19(6), 716–723
3. Akbas A. and Adnan K., (2007), Affective factors that influence chemistry achievement (motivation and anxiety) and the power of these factors to predict chemistry achievement-II, J. Turkish Sci. Educ., 4(1), 10
4. American Educational Research Association, American Psychological Association, National Council on Measurement in Education, Joint Committee on Standards for Educational, and Psychological Testing (US), (2014), Standards for educational and psychological testing, Washington, DC: AERA Publication
5. Andrew S., (1998), Self-efficacy as a predictor of academic performance in science, J. Adv. Nurs., 27(3), 596–603