Citazione Stile APA (7a Edizione)

PAUL, S. (1955). ECONOMICS 9TH EDITION. MCGRAW HILL.

Citazione stile Chigago Style (17a edizione)

PAUL, SAMUELSON. ECONOMICS 9TH EDITION. NEW-YORK: MCGRAW HILL, 1955.

Citatione MLA (9a ed.)

PAUL, SAMUELSON. ECONOMICS 9TH EDITION. MCGRAW HILL, 1955.