Sari, Ermalia, 		Panggabean, Aman, AND 		Hindryawati, Noor.
" VALIDASI METODE RAPID TEST DALAM PENENTUAN TOTAL MOISTURE, ASH CONTENT, CALORIFIC VALUE (AR) PADA BATUBARA TERHADAP STANDAR ISO UKURAN 3 MM PT. KALTIM PRIMA COAL" <em>JURNAL ATOMIK</em> [Online], Volume 1 Number 2 (29 September 2016)