Okoro, C., I. Musonda, and J. Agumba. “Validity and Reliability of a Questionnaire Developed to Explore Nutrition Determinants Among Construction Workers in Gauteng, South Africa”. South African Journal of Clinical Nutrition, Vol. 32, no. 2, July 2019, pp. 18-25, http://sajcn.redbricklibrary.com/index.php/SAJCN/article/view/1405.