Dyfyniad APA

(1973). Speyer cathedral: Cathedral church. Papal basilica (3a. ed.). Schnell and Stein.

Dyfyniad Arddull Chicago

Speyer Cathedral: Cathedral Church. Papal Basilica. 3a. ed. Múnich: Schnell and Stein, 1973.

Dyfyniad MLA

Speyer Cathedral: Cathedral Church. Papal Basilica. 3a. ed. Schnell and Stein, 1973.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.