International Federation for Housing and Planning. (1971). Environment and physical planning, background papers for a discussion group at the International Congress of IFHP held at Belgrade, Yugoslavia in June 1971. International Federation for Housing and Planning.
Chicago (17e ed.) BronvermeldingInternational Federation for Housing and Planning. Environment and Physical Planning, Background Papers for a Discussion Group at the International Congress of IFHP Held at Belgrade, Yugoslavia in June 1971. The Hague: International Federation for Housing and Planning, 1971.
MLA (9e ed.) BronvermeldingInternational Federation for Housing and Planning. Environment and Physical Planning, Background Papers for a Discussion Group at the International Congress of IFHP Held at Belgrade, Yugoslavia in June 1971. International Federation for Housing and Planning, 1971.