Lua APA (7ú heag.)
Duhme, L. (2012). Cultural tourism: Case study Portugal. Diplomica Verlag.
Lua i Stíl Chicago (17ú heag.)
Duhme, Laura. Cultural Tourism: Case Study Portugal. Hamburg: Diplomica Verlag, 2012.
Lua MLA (9ú heag.)
Duhme, Laura. Cultural Tourism: Case Study Portugal. Diplomica Verlag, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.