PREUSS, S. P.; WEIKUM, S. S. Procurement programs and Supply Chain Management in Switzerland. Journal of Procurement & Supply Chain, [S. l.], v. 5, n. 2, p. 10–20, 2021. Disponível em: https://stratfordjournalpublishers.org/journals/index.php/journal-of-procurement-supply/article/view/850. Acesso em: 22 jan. 2026.