Mrope Noel & Mayage, E. (2002). Understanding international purchasing. Mzumbe University.
Citazione stile Chigago Style (17a edizione)Mrope Noel e Emmanuel Mayage. Understanding International Purchasing. Mzumbe-Morogoro: Mzumbe University, 2002.
Citatione MLA (9a ed.)Mrope Noel e Emmanuel Mayage. Understanding International Purchasing. Mzumbe University, 2002.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.