-
1Argitaratua 1970“...Novgorod (Russia) History Sources....”
Liburua -
2nork Marasinova, L. M. (Li︠u︡dmila Mikhaĭlovna)“...Pskov (Russia) History Sources....”
Argitaratua 1966
Liburua -
3nork Kostomarov, N. I. (Nikolaĭ Ivanovich), 1817-1885“...Russia History To 1533....”
Argitaratua 1994
Liburua