Analisis kebutuhan tenaga kerja berdasarkan beban kerja nyata dengan metode Workload Indicator Staffing Needs (WISN) di Instalasi Farmasi Rumah Sakit Tugu Ibu = Analysis of workforce based on real workload with Workload Indicator Staffing Needs (WISN) method by pharmacy instalation at Tugu Ibu Hospital (Fakultas Kesehatan Masyarakat Universitas Indonesia, 2013)