APA

United States, . (1960). Housing characteristics for states, cities, and counties = Características de la vivienda para estados, ciudades y municipios. Washington: U.S. Govt. Print. Off.

Chicago

United States, . 1960. Housing characteristics for states, cities, and counties = Características de la vivienda para estados, ciudades y municipios. Washington: U.S. Govt. Print. Off.

Harvard

United States, . (1960). Housing characteristics for states, cities, and counties = Características de la vivienda para estados, ciudades y municipios. Washington: U.S. Govt. Print. Off.

MLA

United States, . Housing characteristics for states, cities, and counties = Características de la vivienda para estados, ciudades y municipios. Washington: U.S. Govt. Print. Off. 1960.