8. “Q&A with ron heeks, managing director at geopacific resources”.Findfeed. Accessed 26 October 2015.http://finfeed.com/mining/gpr/qa-with-ron-heeks-managing-director-at-geopacific-resources/20150930/
8. “សំណួរនិងចម្លើយជាមួយលោក Ron heeks នាយកគ្រប់គ្រងនៅក្រុមហ៊ុន Geopacific Resources”.Findfeed។ ចូលអានថ្ងៃទី២៦ ខែតុលា ឆ្នាំ២០១៥។ http://finfeed.com/mining/gpr/qa-with-ron-heeks-managing-director-at-geopacific-resources/20150930/