APA aipamena

(1986). The American presidents: The office and the men. Connecticut: Grolier Educational Corporation.

Chicago Style aipamena

The American Presidents: The Office and the Men. Connecticut: Grolier Educational Corporation, 1986.

MLA aipamena

The American Presidents: The Office and the Men. Connecticut: Grolier Educational Corporation, 1986.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.