Cita APA (7a ed.)

Praag, B. M. S. v. (1971). The welfare function of income in Belgium: An empirical investigation. [s.n.].

Cita Chicago Style (17a ed.)

Praag, Bernard M. S. van. The Welfare Function of Income in Belgium: An Empirical Investigation. [S.l.]: [s.n.], 1971.

Cita MLA (9a ed.)

Praag, Bernard M. S. van. The Welfare Function of Income in Belgium: An Empirical Investigation. [s.n.], 1971.