APA aipamena

Samuelson, P. A. (1967). Economics: An introductory analysis. New York: McGraw-Hill Book Company.

Chicago Style aipamena

Samuelson, Paul A. Economics: An Introductory Analysis. New York: McGraw-Hill Book Company, 1967.

MLA aipamena

Samuelson, Paul A. Economics: An Introductory Analysis. New York: McGraw-Hill Book Company, 1967.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.