Karim A. THE INFLUENCE OF SERVICE QUALITY AND COMPETENCY ON EMPLOYEE WORK EFFECTIVENESS AT LAUNDRY IN PERCUT SEI TUAN DELI SERDANG DISTRICT. strategic management bus j [Internet]. 2024 Jun. 30 [cited 2026 Jan. 16];4(01):336-40. Available from: https://journal.smbjupmi.com/index.php/smbj/article/view/89