Khasanah, Ulfiatul, 		Supriyanto, Supriyanto, AND 		Djayus, Djayus.
" ANALISIS NILAI LOG GAMMA RAY DAN LOG DENSITY TERHADAPVARIASI KECEPATAN PEREKAMAN METODE WELL LOGGING “ROBERTSON GEOLOGGING (RG)”" <em>GEOSAINS KUTAI BASIN</em> [Online], Volume 2 Number 1 (28 February 2019)