Ziegfeld, R. E. The exile writer and his publishers: Vicky Baum and Doubleday / Richard E. Ziegfeld. Deutsche Exilliteratur - Literatur der Nachkriegszeit : Akten des 3. Exilliteratur-Symposiums der Univesity of South Carolina.(1981).
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিZiegfeld, Richard E. "The Exile Writer and His Publishers: Vicky Baum and Doubleday / Richard E. Ziegfeld." Deutsche Exilliteratur - Literatur Der Nachkriegszeit : Akten Des 3. Exilliteratur-Symposiums Der Univesity of South Carolina.(1981) .
M.L.A (8 ম সংস্করণ) উদ্ধৃতিZiegfeld, Richard E. "The Exile Writer and His Publishers: Vicky Baum and Doubleday / Richard E. Ziegfeld." Deutsche Exilliteratur - Literatur Der Nachkriegszeit : Akten Des 3. Exilliteratur-Symposiums Der Univesity of South Carolina.(1981), .