C. A. Taib, A. Ahmad, and N. H. Abu, “Amalan Kualiti dan Hubungan Gaya Kepimpinan Terhadap Elemen Soft dan Hard Model McKinsey”, JBMA, vol. 5, no. 1, pp. 57–75, Dec. 2015, doi: 10.32890/jbma2015.5.0.8861.