APA aipamena

Samuelson, P. (2005). Macroeconomics (18th.). McGraw Hill.

Chicago Style aipamena

Samuelson, Paul. Macroeconomics. 18th. NewYork: McGraw Hill, 2005.

MLA aipamena

Samuelson, Paul. Macroeconomics. 18th. McGraw Hill, 2005.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.