(2015). Formalizing the informal: Challenges and opportunities of informal settlements in South-East Europe. United Nations.
Chicago-Zitierstil (17. Ausg.)Formalizing the Informal: Challenges and Opportunities of Informal Settlements in South-East Europe. New York ; Geneva: United Nations, 2015.
MLA-Zitierstil (9. Ausg.)Formalizing the Informal: Challenges and Opportunities of Informal Settlements in South-East Europe. United Nations, 2015.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.