Tjetjep Yusuf Afandi, Bayu Surindra, Elis Irmayanti, Zainal Arifin, Efa Wahyu Prastyaningtyas, and Ari Saputri Novita Anggraini, “Development of Self-Directed Learning-Based Bank and Financial Institution Textbooks to Improve the Quality of Learning”, IJHESS, vol. 2, no. 6, Jun. 2023.