Não informado. (1974). Journal of Purchasing and Materials Management. National Association of Purchasing Management.
Lua i Stíl Chicago (17ú heag.)Não informado. Journal of Purchasing and Materials Management. Oradell, NJ: National Association of Purchasing Management, 1974.
Lua MLA (8ú heag.)Não informado. Journal of Purchasing and Materials Management. National Association of Purchasing Management, 1974.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.