Cita APA (7th ed.)

Napoleoni, C., & Cigno, A. (1972). Economic thought of the twentieth century. Martin Robertson.

Cita Chicago (17th ed.)

Napoleoni, Claudio, i Alessandro Cigno. Economic Thought of the Twentieth Century. London: Martin Robertson, 1972.

Cita MLA (8th ed.)

Napoleoni, Claudio, i Alessandro Cigno. Economic Thought of the Twentieth Century. Martin Robertson, 1972.