Sitopu J, Dalimunthe EF, Budiarta K, Dalimunthe MB. The Influence of the Principal’s Leadership Style on the Quality of Education at SMP Swasta Masehi Berastagi for the 2023/2024 Academic Year. probis [Internet]. 2024 Aug. 5 [cited 2024 Sep. 28];15(4):509-15. Available from: http://ejournal.joninstitute.org/index.php/ProBisnis/article/view/586