Analisis Pengaruh Persepsi Layanan Pasien Unit Rawat Jalan Terhadap Minat Beli Obat Ulang di Instalasi Farmasi RSI Ibnu Sina Padang Tahun 2006 (Influence Analysis Of Patient's Perception Of Pharmaceutical Service In Outpatients Unit To Desire Of Repeatedly Buying A Medicine In Pharmacy Installation Of Ibnu Sina Hospital In Padang In Year Of 2006 ) - Ifmaily, Ifmaily (2006)