National Association of Purchasing Management. Journal of purchasing and materials management: J. purch. mater. manage. Oradell, N.J., etc.: National Association of Purchasing Management.
Chicago Style aipamenaNational Association of Purchasing Management. Journal of Purchasing and Materials Management: J. Purch. Mater. Manage. Oradell, N.J., etc.: National Association of Purchasing Management.
MLA aipamenaNational Association of Purchasing Management. Journal of Purchasing and Materials Management: J. Purch. Mater. Manage. Oradell, N.J., etc.: National Association of Purchasing Management.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.