Muhammad Arif Kurnianda, Nellitawati, Sufyarma M, Sulastri. Principal’s Leadership Contribution And Work Motivation On Teacher’s Work Discipline State Vocational School Of Padang City . IJHESS [Internet]. 2022 Dec. 10 [cited 2026 May 14];2(3). Available from: https://ijhess.com/index.php/ijhess/article/view/289