Cita APA (7a ed.)

Samuelson, P. A. (1960). Readings in Economics (3a. ed.). [s. n.].

Cita Chicago Style (17a ed.)

Samuelson, Paul A. Readings in Economics. 3a. ed. [s. l.]: [s. n.], 1960.

Cita MLA (9a ed.)

Samuelson, Paul A. Readings in Economics. 3a. ed. [s. n.], 1960.