APA aipamena

Billington Ray Allen. American History: Before 1877. Littlefield.

Chicago Style aipamena

Billington Ray Allen. American History: Before 1877. [s.l]: Littlefield.

MLA aipamena

Billington Ray Allen. American History: Before 1877. Littlefield.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.