Sedliak, M. a Šulgan, M. (2011) „COMPARATIVE STUDY OF DIFFERENT FORMS OF MATERIAL PROCUREMENT WITH RESPECT TO THE LOGISTIC AND PURCHASING ACTIVITIES OF THE MANUFACTURING COMPANY", Perner’s Contacts, 6(4), s. 271–278. Dostupné z: https://pernerscontacts.upce.cz/index.php/perner/article/view/927 (Viděno: 6 květen 2024).