SAMUELSON PAUL A. (2022). ECONOMICS (20TH.). MCGRAW-HILL.
Cita Chicago (17th ed.)SAMUELSON PAUL A. ECONOMICS. 20TH. NEW YORK: MCGRAW-HILL, 2022.
Cita MLA (9th ed.)SAMUELSON PAUL A. ECONOMICS. 20TH. MCGRAW-HILL, 2022.
Atenció: Aquestes cites poden no estar 100% correctes.