J. Mshana, E. Ngowi, A. Tumain, and M. Kadigi, “Heterogeneous effects of marketing strategies on sunflower oil processing small and medium enterprises performance in Tanzania: Mixed-methods evidence from Singida Region”, Afr. Quarterly S.S. Review, vol. 3, no. 3, pp. 880–896, Sep. 2026, doi: 10.51867/AQSSR.3.3.70.