Cita APA (7th ed.)
(1973). Census of population: 1970, Vol. 1 = Characteristics of the population. U.S. Department of Commerce.
Cita Chicago (17th ed.)
Census of Population: 1970, Vol. 1 = Characteristics of the Population. Washington: U.S. Department of Commerce, 1973.
Cita MLA (9th ed.)
Census of Population: 1970, Vol. 1 = Characteristics of the Population. U.S. Department of Commerce, 1973.
Atenció: Aquestes cites poden no estar 100% correctes.