Ihedioha Nice Nneoma, Dr. Onyekuru Anthony NwaJesus, Ugwuoke Chukwuchebe Obiajulu, and Ume Chukwuma Otum, “Understanding Food Expenditure Systems among Households in Nigeria: A Case Study of Nsukka Area, Enugu State”, GJHSS, vol. 18, no. E7, pp. 27–37, May 2018.