Widyastuti, Vironika (2017) MODEL PENINGKATAN KINERJA SDM MELALUI QWL (Quality of Work Life), OCB(Organizational Citizenship Behavior), KNOWLEDGE SHARING, DAN LINGKUNGAN KERJA PADA PT. SUMBER ALFARIA TRIJAYA Tbk DC SEMARANG. Undergraduate thesis, Fakultas Ekonomi UNISSULA.