APA (7th ed.) Citation

Samuelson, P. A. (1951). Economics: An introductory analysis. McGraw-Hill.

Chicago Style (17th ed.) Citation

Samuelson, Paul Anthony. Economics: An Introductory Analysis. New York: McGraw-Hill, 1951.

MLA (9th ed.) Citation

Samuelson, Paul Anthony. Economics: An Introductory Analysis. McGraw-Hill, 1951.