Cita APA (7th ed.)

Castro, N., De la Paz, D., & Smith, P. C. (1975). A scale for household Socio-Economic Level (SEL) in the 1973 national demographic survey. s.n.].

Cita Chicago (17th ed.)

Castro, N.M, D.R De la Paz, i Peter C. Smith. A Scale for Household Socio-Economic Level (SEL) in the 1973 National Demographic Survey. [S.l: s.n.], 1975.

Cita MLA (9th ed.)

Castro, N.M, et al. A Scale for Household Socio-Economic Level (SEL) in the 1973 National Demographic Survey. s.n.], 1975.