Waruwu FA, Zebua E, Zalukhu Y, Harefa I. Marketing Mix Strategy in Efforts to Increase Drug Sales at the Healthy Pharmacy in Gunungsitoli City, Produced by PT Kalbe Farma Tbk. probis [Internet]. 2024 Apr. 30 [cited 2024 Sep. 28];15(2):274-8. Available from: http://ejournal.joninstitute.org/index.php/ProBisnis/article/view/543