- Engels, Friedrich, 1820-1895 (8)
- Marx, Karl, 1818-1883 (8)
- Untermann, Ernest (3)
- Aveling, Edward Bibbins, 1851-1898 (2)
- Moore, Samuel (2)
- Adler, Mortimer Jerome, 1902- (1)
- Encyclopaedia Britannica (1)
- Mēthī ʿĪamwarā (1)
- Skvort︠s︡ov-Stepanov, Ivan Ivanovich, 1870-1928 (1)