Stites, R. Circles on a square: The heart of St. Petersburg culture in early nineteenth century / Richard Stites. Picturing Russia : explorations in visual culture.(2008).

Stites, Richard. "Circles on a Square: The Heart of St. Petersburg Culture in Early Nineteenth Century / Richard Stites." Picturing Russia : Explorations in Visual Culture.(2008) .

Stites, Richard. "Circles on a Square: The Heart of St. Petersburg Culture in Early Nineteenth Century / Richard Stites." Picturing Russia : Explorations in Visual Culture.(2008), .