Alder, Douglas (October 1978). "Friedrich Adler: Evolution of a Revolutionary". German Studies Review. 1 (3). Johns Hopkins University Press (subscription required): 266. doi:10.2307/1429221. JSTOR1429221.
Alder, Douglas (October 1978). "Friedrich Adler: Evolution of a Revolutionary". German Studies Review. 1 (3). Johns Hopkins University Press (subscription required): 276–9. doi:10.2307/1429221. JSTOR1429221.
Steiner, Herber (1967). "L'internationale socialiste à la veille de la Seconde Guerre mondiale, juillet-août 1939: Documents de Friedrich Adler". Le Mouvement Social (in French) (58). Editions l'Atelier (subscription required): 95–96. doi:10.2307/3777238. JSTOR3777238.
jstor.org
Alder, Douglas (October 1978). "Friedrich Adler: Evolution of a Revolutionary". German Studies Review. 1 (3). Johns Hopkins University Press (subscription required): 266. doi:10.2307/1429221. JSTOR1429221.
Alder, Douglas (October 1978). "Friedrich Adler: Evolution of a Revolutionary". German Studies Review. 1 (3). Johns Hopkins University Press (subscription required): 276–9. doi:10.2307/1429221. JSTOR1429221.
Steiner, Herber (1967). "L'internationale socialiste à la veille de la Seconde Guerre mondiale, juillet-août 1939: Documents de Friedrich Adler". Le Mouvement Social (in French) (58). Editions l'Atelier (subscription required): 95–96. doi:10.2307/3777238. JSTOR3777238.