Ngegba, Mohamed, Emmanuel Hinckley, Muctar Koroma, Alfred Ngegba, i Oladimeji Oladele. 2023. „Implications of Prevalence and Intensity of Soil-Transmitted Helminthes (STHs) on Rural Farmers’ Productivity in Selected Districts of Sierra Leone”. Zeszyty Naukowe SGGW W Warszawie - Problemy Rolnictwa Światowego 23 (1):32-45. https://doi.org/10.22630/PRS.2023.23.1.3.