Mohamed Noor, Noor Fazlin, et al. “MODAL MANUSIA RAKAN SEKERJA DAN UPAH INDIVIDU: SATU KERANGKA KONSEPTUAL”. Management Research Journal, vol. 4, Oct. 2015, pp. 119-30, https://ejournal.upsi.edu.my/index.php/MRJ/article/view/1451.