Não informado. (1977). Journal of Powder and Bulk Solids Technology. International Powder Institute.
Lua i Stíl Chicago (17ú heag.)Não informado. Journal of Powder and Bulk Solids Technology. Chicago, Ill: International Powder Institute, 1977.
Lua MLA (8ú heag.)Não informado. Journal of Powder and Bulk Solids Technology. International Powder Institute, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.