History of the Russian revolution.Kn.1. Vol.2. Tragedy of the Russian intelligentsia.Part 2-3.

Krachkevich, P.Z.History of the Russian Revolution: (Note of the Journalist Officer).1914-1920 / P.Z.Krachkevich (Alpha).- Grodno, 1921. -.I. Alpha.Electronic Source: PBKn.1. Vol.2: Tragedy of the Russian intelligentsia.Part 2-3: at 10 h - type."T-Va S. Lapin with C-MI", 1921. -37-72 s .. -.Electronic Source: PB