Sufiyan, I. (2013). Analysis for suitability of refuse dump site locations in Keffi using GIS.
芝加哥风格引文Sufiyan, Ibrahim. Analysis for Suitability of Refuse Dump Site Locations in Keffi Using GIS. 2013.
MLA引文Sufiyan, Ibrahim. Analysis for Suitability of Refuse Dump Site Locations in Keffi Using GIS. 2013.
警告：这些引文格式不一定是100％准确.