APA

SAMUELSON P. A., NORDHAUS W. D., . (1992). ECONOMICS. NEW YORK: MCGRAW-HILL.

Chicago

SAMUELSON PAUL A, NORDHAUS WILLIAM D, . 1992. ECONOMICS. NEW YORK: MCGRAW-HILL.

Harvard

SAMUELSON P. A., NORDHAUS W. D., . (1992). ECONOMICS. NEW YORK: MCGRAW-HILL.

MLA

SAMUELSON PAUL A, NORDHAUS WILLIAM D, . ECONOMICS. NEW YORK: MCGRAW-HILL. 1992.