Rabochiĭ klass i so︠t︡sialʹna︠i︡a ėvol︠i︡u︠t︡si︠i︡a v neft︠i︡anykh monarkhi︠i︡akh Vostoka - ︠I︡Akovlev, A. I. (Aleksandr Ivanovich) (Izd-vo "Nauka", Glav. red. vostochnoĭ lit-ry, 1988)