APA aipamena

Feinstein, A. H. (2002). Purchasing ed.5. John Wiley & Sons.

Chicago Style aipamena

Feinstein, Andrew Hale. Purchasing Ed.5. John Wiley & Sons, 2002.

MLA aipamena

Feinstein, Andrew Hale. Purchasing Ed.5. John Wiley & Sons, 2002.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.