APA (7th ed.) Citation

Samuelson, P. (1948). Economics: An introductory analysis. McGraw-Hill.

Chicago Style (17th ed.) Citation

Samuelson, Paul. Economics: An Introductory Analysis. New York: McGraw-Hill, 1948.

MLA (9th ed.) Citation

Samuelson, Paul. Economics: An Introductory Analysis. McGraw-Hill, 1948.