Ludewig, A. (2024). "The Lifeline": Max Brod and Hugo Bergmann. Shmuel Hugo Bergmann : A Life between Prague and Jerusalem.
Chicago-viite (17. p.)Ludewig, Anna-Dorothea. ""The Lifeline": Max Brod and Hugo Bergmann." Shmuel Hugo Bergmann : A Life Between Prague and Jerusalem 2024.
MLA-viite (8. p.)Ludewig, Anna-Dorothea. ""The Lifeline": Max Brod and Hugo Bergmann." Shmuel Hugo Bergmann : A Life Between Prague and Jerusalem, 2024.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.