Fernando, Y., A. Gui, I. Sari Wahyuni-TD, Y. Won Seo, and H. Haron. “Supplier Sustainable Integrity Using a Split-Half Method: Empirical Evidence from Malaysia”. KnE Social Sciences, Vol. 3, no. 22, Aug. 2019, pp. 579–592, doi:10.18502/kss.v3i22.5076.