The man without a face : the unlikely rise of Vladimir Putin / Masha Gessen. - New York : Riverhead Books, 2012. - 314 p. ; 24 cm.см.. - ბიბლიოგრ.: გვ. 293-307. - ISBN 978-1-59448-842-9[MFN: 45059]
The strongman : Vladimir Putin and the struggle for Russia / Angus Roxburgh. - London ; New York : I.B. Tauris, 2012. - xiv, 338 p. + [8] inset l. ill. ; 22 cm.см.. - ბიბლიოგრ.: გვ. 323-332. - ISBN 978-1-78076-016-2[MFN: 45061]