Amosa, B. P., T. Imo, F. Latu, R. Ieremia, I. Simi, and G. Gese. “Analysis of Chemical Properties in Soil in the Selected Sites in Samoa”. European Journal of Applied Sciences, vol. 10, no. 4, July 2022, pp. 170-83, doi:10.14738/aivp.104.12491.