1. Theoretical perspectives on factors affecting the academic performance of students;Jama MP;S Afr J High Educ,2008
2. Impact of education system (semester and annual system) on students' performance in Pakistan;Fardows N,2016
3. Differences in student outcomes between block, semester, and trimester schedules. (2001). https.//eric.ed.gov/?q=Differences+in+student+outcomes+between+block%2c+semester%2c+and+trimester+schedules&id=ED457590.
4. A study of English teachers and students’ perception about the differences between annual and semester system of education at postgraduate level in Mardan;Khattak ZI;Procedia Soc Behav Sci,2011
5. The real test bias: influences of testing on teaching and learning;Frederiksen N;Am Psychol,1984