Hubungan kemampuan kognitif dan beban kerja perawat pelaksana dengan kesalahan pemberian obat di unit rawat inap Rumah Sakit Umum Daerah Cengkareng Jakarta Barat = The correlation between the cognitive level and workload of the nurse on duty to medication administration error in patient care at RSUD Cengkareng - Wardani Arsyad, author (2013)