APA (7th ed.) Citation

Samuelson, P. A. (1961). Economics: An introductory analysis (5th ed. International student edition.). McGraw-Hill.

Chicago Style (17th ed.) Citation

Samuelson, Paul Anthony. Economics: An Introductory Analysis. 5th ed. International student edition. New York: McGraw-Hill, 1961.

MLA (9th ed.) Citation

Samuelson, Paul Anthony. Economics: An Introductory Analysis. 5th ed. International student edition. McGraw-Hill, 1961.