SKKD No. 0707/UN25.5.1/TU.3/2023 " The Development of Digital Textbook Using eXe Format to Elevate Learning Effectiveness in History Instruction at The Second Grade of Senior High School "
SKKD No. 1138/UN25.51/TU.3/2022 " The Influence of Work environment and Fulfillment of Occupational Needs on The Performance of Geography Teachers at Public Senior High School in Lumajang Regency "