Yulhendri, Yulhendri. 2018. “Efforts To Increase Interest In Learning Machine Prime Mover Boats Students Through Learning Method Demonstration In Class X Smk Negeri 1 Sutera Sutera District Of School Year 2015 2016”. Jurnal Ilmiah Pendidikan Scholastic 1 (2):71-79. https://doi.org/10.36057/jips.v1i2.249.