Mrope, N., & Mayaga, E. (2005). Understanding international purchasing. Mzumbe Book Project.
芝加哥风格引文Mrope, Noel, 与 Emmanuel Mayaga. Understanding International Purchasing. Morogoro: Mzumbe Book Project, 2005.
MLA引文Mrope, Noel, 与 Emmanuel Mayaga. Understanding International Purchasing. Mzumbe Book Project, 2005.
警告：这些引文格式不一定是100％准确.