1. Adams, Raymond J, Margaret L Wu, and Mark R Wilson. (2017). "ACER conquest." In Handbook of Item Response Theory, 495-506. Chapman and Hall/CRC.
2. ADB. (2014). Indonesia: Madrasah Education Development Project. Jakarta: Asian Development Bank.
3. Ahmadi, Seyedeh Masoumeh. (2016). The importance of listening comprehension in language learning. International Journal of Research in English Education, 1(1), 7–10. www.ijreeonline.com.
4. Akinwumi, Julius Olaitan. (2017). Effects of gender and school location on the Ekiti State secondary schools students’ achievement in reading comprehension in English language. Journal of Education and Practice, 8(5), 50–55. www.iiste.org.
5. Alagumalai, Sivakumar, Curtis, David D., & Hungi, Njora. (2005). Applied Rasch measurement: a book of exemplars. The Netherlands: Springer. https://link.springer.com/book/10.1007/1-4020-3076-2 .