Sollish, F., & Semanik, J. (2007). The procurement and supply manager's desk reference. John Wiley and Sons.
Lua i Stíl Chicago (17ú heag.)Sollish, Fred, agus John Semanik. The Procurement and Supply Manager's Desk Reference. Hoboken, USA: John Wiley and Sons, 2007.
Lua MLA (9ú heag.)Sollish, Fred, agus John Semanik. The Procurement and Supply Manager's Desk Reference. John Wiley and Sons, 2007.
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