Kamarulzaman, L. M., J. Hassan, and M. T. Abdul Ghani. “Integrating Collaborative Learning in English Proficiency Classroom: Does It Resolve Students’ Speaking Anxiety? Pengintegrasian Pembelajaran Kolaboratif Di Dalam Kelas Bahasa Inggeris: Adakah Ia Menyelesaikan Masalah Keresahan Bertutur Pelajar?”. 2020. Sains Insani, vol. 5, no. 1, July 2020, pp. 200-4, doi:10.33102/sainsinsani.vol5no1.188.