Aghara, V. N. O., I. C. Nwaizugbo, P. C. Oparah, and C. D. Ifeanyichukwu. “Sales Promotion As a Leverage Strategy for Improving Sales and Profitability in Alcohol Beverage Industry: A Study of Nigeria Breweries Plc”. International Research Journal of Management, IT and Social Sciences, vol. 5, no. 4, June 2018, pp. 18-25, doi:10.21744/irjmis.v5n4.245.