Ifeanyichukwu, C. . D., and A. Peter. “The Role of Sensory Marketing in Achieving Customer Patronage in Fast Food Restaurants in Awka”. International Research Journal of Management, IT and Social Sciences, vol. 5, no. 2, Feb. 2018, pp. 155-63, https://sloap.org/journals/index.php/irjmis/article/view/65.