Napitupulu, N. “P PENGARUH PEMBERIAN MADU LEBAH TERHADAP TEKANAN DARAH PADA LANSIA PENDERITA HIPERTENSI”. CHMK NURSING SCIENTIFIC JOURNAL, Vol. 4, no. 3, Sept. 2020, pp. 303-9, http://cyber-chmk.net/ojs/index.php/ners/article/view/892.