Mandl, J. J. (2007). Property investment in Bulgaria: Why invest? why not to invest? Diplom.de.
Lua i Stíl Chicago (17ú heag.)Mandl, Jubilee Jenna. Property Investment in Bulgaria: Why Invest? Why Not to Invest? Hamburg: Diplom.de, 2007.
Lua MLA (9ú heag.)Mandl, Jubilee Jenna. Property Investment in Bulgaria: Why Invest? Why Not to Invest? Diplom.de, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.