Setiasih, Rini, Tri Suminar, and Sarwi Sarwi. “Supervision of Standard Operating Procedures (SOP) in Early Childhood Education Learning”. Journal of Primary Education 8, no. 9 (October 24, 2019): 290-295. Accessed November 24, 2024. https://journal.unnes.ac.id/sju/jpe/article/view/35068.