Andi Mustika Amin, and Andi Aryani Hardiyanti. “Challenges and Prospects of ROI Measurement in B2B Digital Marketing: Evidence from MSMEs in Gowa Regency”. Journal of Studies in Academic, Humanities, Research, and Innovation, vol. 2, no. 2, Dec. 2025, pp. 859-72, doi:10.71305/sahri.v2i2.903.