Dokumentuaren aipamena

APA aipamena

U.S. department of commerce. (1921). Survey of current business. U.S. department of commerce.

Chicago Style aipamena

U.S. department of commerce. Survey of Current Business. Washington D.C: U.S. department of commerce, 1921.

MLA aipamena

U.S. department of commerce. Survey of Current Business. U.S. department of commerce, 1921.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.