APA aipamena

Steck, F. B. (1947). Christopher Columbus and the Franciscans. Washington, D.C..

Chicago Style aipamena

Steck, Francis Borgia. Christopher Columbus and the Franciscans. Washington, D.C., 1947.

MLA aipamena

Steck, Francis Borgia. Christopher Columbus and the Franciscans. Washington, D.C., 1947.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.