Simarmata, N. et al. 2022. The Influence of Work Discipline, Work Environment, and Work Productivity, on Employee Performance at the Youth and Sports Office, Culture and Tourism of Labuhanbatu Regency. Quantitative Economics and Management Studies. 3, 3 (Jun. 2022), 394–401. DOI:https://doi.org/10.35877/454RI.qems953.