D. M. J. Dalimunthe, Tengku Ezni Balqiah, Heri Pratikto, Rifelly Dewi Astuti, and A. Q. Hutagalung, “Social Capital, Subjective Norm, Product Knowledge, Environmental Concern, and Perceived Behavioral Control on Purchase Intensity of Recycled Products in MSMEs”, J. Of Management Analytical and Solution, vol. 6, no. 2, pp. 60–68, May 2026.