8. IUCN, 2014. ‘Industry must act now to safeguard biodiversity threatened by limestone quarrying’, 19 May 2014, http://iucn.org/about/work/programmes/business/?14818/Industry-must-act-now-to-safeguard-biodiversity-threatened-by-limestone-quarrying
8. IUCN, ឆ្នាំ២០១៤. “ឧស្សាហកម្មត្រូវតែធ្វើសកម្មភាពដើម្បីការពារជីវចំរុះនៅពេលនេះរងការគំរាមកំហែងដោយយកថ្មកំបោរ”, ថ្ងៃទី១៩ ខែឧសភា ឆ្នាំ២០១៤។ http://iucn.org/about/work/programmes/business/?14818/Industry-must-act-now-to-safeguard-biodiversity-threatened-by-limestone-quarrying