BABAJIDE, N., ARIMORO, P. and KABIR, Y. 2015. Tax regimes of oil producing giants: a comparative study of Iran, Nigeria and United States of America. International journal of multidisciplinary research and development [online], 2(2), pages 66-75. Available from: https://allsubjectjournal.com/assets/archives/2015/vol2issue2/148.1.pdf