United Nations. Statistical Office. (1956). General principles for a housing census. First-second draft. s.n.
Chicago-Zitierstil (17. Ausg.)United Nations. Statistical Office. General Principles for a Housing Census. First-second Draft. New York: s.n, 1956.
MLA-Zitierstil (9. Ausg.)United Nations. Statistical Office. General Principles for a Housing Census. First-second Draft. s.n, 1956.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.