Milenia, R. Y. “The Effect of Online Learning on Students’ Learning Achievement in Class XI IPS SMA N 2 Lubuk Basung, Agam Regency”. Jurnal Riset Ilmu Pendidikan, vol. 2, no. 4, Oct. 2022, pp. 258-61, doi:10.56495/jrip.v2i4.196.