UTAMI, PRI, 		SUGIYANTO, SUGIYANTO, 		MARTONO, SUDIBYO, AND 		HAKIM, LUKMAN.
" Isocratic High Performance Liquid Chromatographic Method for Determination of Metoprolol and Its Metabolite in Human Urine" <em>JURNAL ILMU KEFARMASIAN INDONESIA</em> [Online], Volume 14 Number 1 (4 September 2017)