Compare: March, G. Patrick. 1996. 3: Ivan IV and the Muscovite Drang nach Osten. Eastern Destiny: Russia in Asia and the North Pacific. Praeger Publishers. Westport, Connecticut. str. 26. ISBN9780275956486. Pristupljeno 8. veljače 2017.. It was in pursuit of a northeast passage that the English under the leadership of Richard Chancellor arrived in Kholmogory in 1553.
Kholmogory. Inačica izvorne stranice arhivirana 9. veljače 2009. Pristupljeno 10. rujna 2010.CS1 održavanje: bot: nepoznat status originalnog URL-a (link). lomonosovo.ru (in Russian)