Citazione Stile APA (7a Edizione)
(1968). Directory of authorities and principal organizations related to the building industry. United Nations.
Citazione stile Chigago Style (17a edizione)
Directory of Authorities and Principal Organizations Related to the Building Industry. New York: United Nations, 1968.
Citatione MLA (9a ed.)
Directory of Authorities and Principal Organizations Related to the Building Industry. United Nations, 1968.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.