“Microbial quality of peanut butter manufactured by small-scale producers at two popular open-air markets in Lusaka Mary Ngulube and Evans Kaimoyo∗”, ISTJN, vol. 16, pp. 40–51, Jul. 2023, Accessed: Aug. 27, 2026. Available: https://journals.unam.edu.na/index.php/ISTJN/article/view/1843