Nurrosyidah, I. H., and A. Syakur. “Challenges and Prospects for Implementing Halal Principles in the Jamu Industry in Indonesia”. Journal of Halal Product and Research (JHPR), vol. 7, no. 1, June 2024, pp. 104-12, doi:10.20473/jhpr.vol.7-issue.1.104-112.