Muhammad Da’i Kuncoro, Beby Karina Fawzeea Sembiring. The Effect Of Product Knowledge, Perceived Behavior Control, And Personal Norm On Purchase Intention Of Smes’ Recycled Products In Medan. esber [Internet]. 2023 Apr. 15 [cited 2024 Oct. 14];2(1):23-32. Available from: https://ecsis.org/index.php/esber/article/view/74