Shafii, S. F., and H. Jaafar. “Kesan Pelaksanaan Pembelajaran Berasaskan Masalah Terhadap Pemikiran Kritis Pelajar Tingkatan Empat Dalam Mata Pelajaran Prinsip Perakaunan: The Effect of Problem Based Learning (PBL) Towards Form Four Students’ Critical Thinking Skills in Principles of Accounting Subject”. Management Research Journal, vol. 7, Dec. 2018, pp. 175-87, doi:10.37134/mrj.vol7.15.2018.