Univerzitet u Kragujevcu. Fakultet in zenjerskih nauka. Tribology in industry. Faculty of Engineering, University of Kragujevac.
Lua i Stíl Chicago (17ú heag.)Univerzitet u Kragujevcu. Fakultet in zenjerskih nauka. Tribology in Industry. Kragujevac, Serbia: Faculty of Engineering, University of Kragujevac.
Lua MLA (9ú heag.)Univerzitet u Kragujevcu. Fakultet in zenjerskih nauka. Tribology in Industry. Faculty of Engineering, University of Kragujevac.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.