APA aipamena

RITCHIE, D. A. (1985). Heritage Of Freedom History Of The United States Donald A. Ritchie. Macmillan Publishing Company.

Chicago Style aipamena

RITCHIE, Donald A. Heritage Of Freedom History Of The United States Donald A. Ritchie. Macmillan Publishing Company, 1985.

MLA aipamena

RITCHIE, Donald A. Heritage Of Freedom History Of The United States Donald A. Ritchie. Macmillan Publishing Company, 1985.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.