Rahman, S. A., Azhar, A. A. S., Majeed, A. B., & Nizaruddin, M. A. (2022). Qualitative study on processes, issues and challenges in implementation of islamic obligatory cleansing (Sertu) in halal pharmaceutical industry. International Journal of Health Sciences, 6(S7), 4991–5009. https://doi.org/10.53730/ijhs.v6nS7.13088