Azhari, I. P. ., and B. Bustamin. “Pengaruh SPM Terhadap Kinerja Manajerial; Peran Mediasi Motivasi Intrinsik Dan Effort”. Jurnal Pendidikan Tambusai, vol. 5, no. 2, July 2021, pp. 2947-5, https://jptam.org/index.php/jptam/article/view/1325.