Friedrich, O. (1973). Before the Deluge: A Portrait of Berlin in the 1920's (1. Aufl.). Avon Books.
Chicagoスタイル(17版)引用形式Friedrich, Otto. Before the Deluge: A Portrait of Berlin in the 1920's. 1. Aufl. New York: Avon Books, 1973.
MLA(8版)引用形式Friedrich, Otto. Before the Deluge: A Portrait of Berlin in the 1920's. 1. Aufl. Avon Books, 1973.
警告: この引用は必ずしも正確ではありません.