Freiberg, W. A. (1947). A guide to the cathedral. Messenger Pub. Co..
Chicago Style aipamenaFreiberg, Walter Anthony. A Guide to the Cathedral. Covington, Ky.: Messenger Pub. Co., 1947.
MLA aipamenaFreiberg, Walter Anthony. A Guide to the Cathedral. Messenger Pub. Co., 1947.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.