Orshansky, M. (1968). The shape of poverty in 1966. [s.n.].
Cita Chicago Style (17a ed.)Orshansky, Mollie. The Shape of Poverty in 1966. [S.l.]: [s.n.], 1968.
Cita MLA (9a ed.)Orshansky, Mollie. The Shape of Poverty in 1966. [s.n.], 1968.
Precaución: Estas citas no son 100% exactas.