APA-ийн эшлэл(7 дахь хэвлэлт)

Mandl, J. J. (2007). Property investment in Bulgaria: Why invest? why not to invest? Diplom.de.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Mandl, Jubilee Jenna. Property Investment in Bulgaria: Why Invest? Why Not to Invest? Hamburg: Diplom.de, 2007.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Mandl, Jubilee Jenna. Property Investment in Bulgaria: Why Invest? Why Not to Invest? Diplom.de, 2007.