APA aipamena

(1966). The americana annual. [s.l.]: Americana Corporation.

Chicago Style aipamena

The Americana Annual. [s.l.]: Americana Corporation, 1966.

MLA aipamena

The Americana Annual. [s.l.]: Americana Corporation, 1966.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.