Adewusi, O. A., K. A. Adigun, and A. O. Adigun. “Modelling Customer’s Satisfaction at Portofino Eatery Ado-Ekiti Using Queuing Theory”. ABUAD International Journal of Natural and Applied Sciences, Vol. 2, no. 1, Mar. 2022, pp. 42-48, doi:10.53982/aijnas.2022.0201.05-j.