Institut istorii SSSR (Akademi︠i︡a nauk SSSR) & Shchapov, ︠. N. (1991). Drevnerusskie pisʹmennye istochniki X-XIII vv. Izd-vo "Krug".
Dyfyniad Arddull ChicagoInstitut istorii SSSR (Akademi︠i︡a nauk SSSR) and ︠I︡Aroslav Nikolaevich Shchapov. Drevnerusskie Pisʹmennye Istochniki X-XIII Vv. Moskva: Izd-vo "Krug", 1991.
Dyfyniad MLAInstitut istorii SSSR (Akademi︠i︡a nauk SSSR) and ︠I︡Aroslav Nikolaevich Shchapov. Drevnerusskie Pisʹmennye Istochniki X-XIII Vv. Izd-vo "Krug", 1991.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.