Yusuf, R., E. Tamam, J. Bolong, and M. N. Osman. “Perilaku Membisu Dalam Kalangan Pekerja Malaysia Di Organisasi Jerman: Satu Kajian Rintis: Silence Behavior Among Malaysian Employees in German Organizations: A Pilot Study”. Perspektif Jurnal Sains Sosial Dan Kemanusiaan, vol. 7, no. 2, Nov. 2015, pp. 15-25, https://ojs.upsi.edu.my/index.php/PERS/article/view/1704.