Effiong, James Bassey, and Joseph U. Ogbuefi. “Measuring Performance of Risk-Return in Residential and Commercial Real Estate Investments in South-South, Nigeria”. EPH - International Journal of Business & Management Science (ISSN: 2208-2190) 7, no. 9 (September 13, 2021): 13–29. Accessed November 28, 2021. https://ephjournal.org/index.php/bms/article/view/1821.