Stockhammer, R. "Lesen Sie before the letter:": Oskar Maria Graf in New York / Robert Stockhammer. "Escape to life" : German intellectuals in New York: a compendium on exile after 1933.(2012).
Chicago-referens (17:e uppl.)Stockhammer, Robert. ""Lesen Sie Before the Letter:": Oskar Maria Graf in New York / Robert Stockhammer." "Escape to Life" : German Intellectuals in New York: A Compendium on Exile After 1933.(2012) .
MLA-referens (8:e uppl.)Stockhammer, Robert. ""Lesen Sie Before the Letter:": Oskar Maria Graf in New York / Robert Stockhammer." "Escape to Life" : German Intellectuals in New York: A Compendium on Exile After 1933.(2012), .
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.