APA aipamena

Hale, W. H. (1950). Horace Greeley: Voice of the people. New York: Harper.

Chicago Style aipamena

Hale, William Harlan. Horace Greeley: Voice of the People. New York: Harper, 1950.

MLA aipamena

Hale, William Harlan. Horace Greeley: Voice of the People. New York: Harper, 1950.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.