Não informado. (1957). Annual bulletin of housing and building statistics for Europe. United Nations, Economic Commission for Europe.
Citação do estilo Chicago (17ª ed.)Não informado. Annual Bulletin of Housing and Building Statistics for Europe. Geneva, Suíça: United Nations, Economic Commission for Europe, 1957.
Citação MLA (8ª ed.)Não informado. Annual Bulletin of Housing and Building Statistics for Europe. United Nations, Economic Commission for Europe, 1957.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.