出 处:Journal of Economics and Sustainable Development. 2016 ;7(16):1-4.
出 版 社:The International Institute for Science, Technology and Education (IISTE)
文 章 ID:183094493
作 者:Ali Yassin Sheikh Ali ;Ahmed Khadar Abdi Jama
出 处:European Journal of Business and Management. 2016 ;8(15):102-108.
出 版 社:The International Institute for Science, Technology and Education (IISTE)
文 章 ID:183091555