| FAO(Food and Agriculture Organization of the United Nations): | www.fao.org |
| IFA(The International Fertilizer Association): | www.fertilizer.org |
| IFDC: | www.ifdc.org |
| TSI(The Sulphur Institute): | www.sulphurinstitute.org |
| AFA(Arab Fertilizer Association): | www.afa.com.eg |
| IPNI(International Plant Nutrition Institute): | www.ipni.net |
| IPI(The International Potash Institute): | http://www.ipipotash.org |
| TFI(The Fertilizer Institute): | www.tfiannual.org |
| S&P Global Fertecon : | https://www.spglobal.com/commodityinsights/en/ci/products/agribusiness-fertilizers.html |
| Argus Media group: | www.argusmedia.com |
| CRU Group: | www.crugroup.com |
