Krupskai︠a︡ /
Kunet︠s︡kai︠a︡, Li︠u︡dmila Ivanovna.
Mashtakova, Klara Aleksandrovna.
Moskva : Molodai︠a︡ Gvardii︠a︡,
1973.
Krupskaya, Nadezhda Konstantinovna, 1869-1939.