- Communist International2
- Communist International. Congress2
- Drachkovitch, Milorad M.2
- Lazić, Branko M.2
- Bukharin, Nikolai Ivanovich1
- Communist International Congress1
- Dutt, Rajani Palme1
- Foster, William Z.1
- Gruber, Helmut1
- International Conference of the Executive Committees of Three International Organizations1
- James, C. L. R.1
- Leibzon, B. M.1
- Marcou, Lilly1
- Nollau, Günther1
- Pirker, Theo1
- Sworakowski, Witold S.1
- Székely, Gábor1
- Tyerman, Edward1
- Wiles, Peter John de la Fosse1