Ramadhini, Delfi, 		Ritonga, Nefonavratilova, 		Siregar, Yenni, AND 		Aswan, Yulinda.
"The Effect of Health Education by Using Leaflet Media to Increase the Knowledge of Hypertension Patients in Outpatients At South Tapanuli District Hospital" <em>Jurnal Kesehatan Ilmiah Indonesia / Indonesian Health Scientific Journal</em> [Online], Volume 6 Number 1 (1 July 2021)