APA (7th ed.) Citation

Matt, L. v., & Vian, N. (1955). Pius X. Erdkreis Bildbuch.

Chicago Style (17th ed.) Citation

Matt, Leonard von, and Nello Vian. "Pius X." Erdkreis Bildbuch 1955.

MLA (9th ed.) Citation

Matt, Leonard von, and Nello Vian. "Pius X." Erdkreis Bildbuch, 1955.

Warning: These citations may not always be 100% accurate.