Mkupasi, E., A. Katakweba, and H. Ngowi. “Assessment of Bacterial Contamination in Herbal Medicine Products Vended in Morogoro Municipality, Tanzania”. The East and Central African Journal of Pharmaceutical Sciences, Vol. 24, no. 1, Sept. 2021, pp. 21-28, https://uonjournals.uonbi.ac.ke/ojs/index.php/ecajps/article/view/334.