Prabowo, Gadang Hendra, 		Mak’ruf, Muhammad Ridha, 		Sumber, Sumber, 		Soetjiatie, Liliek, AND 		Utomo, Bedjo.
"Perancangan Stetoskop Elektronik Portable" <em>Jurnal Teknokes</em> [Online], Volume 12 Number 1 (19 September 2019)