Endo LMA, Cerqueira MC, Nery da Silva G, Sena Nery LAS, Kawamoto Júnior LT. Descriptive and comparative study of the purchasing activity: a case study in a food company. BJO&PM [Internet]. 2017 Jul. 23 [cited 2024 Apr. 24];14(2):265-71. Available from: https://bjopm.org.br/bjopm/article/view/V14N2A14