Παραπομπή APA

Graaff, J. V. (1967). Theoretical welfare economics. Cambridge University press.

Παραπομπή Chicago Style

Graaff, J.De V. Theoretical Welfare Economics. London: Cambridge University press, 1967.

Παραπομπή MLA

Graaff, J.De V. Theoretical Welfare Economics. Cambridge University press, 1967.