APA

Sumner B.H, . (1961). The Decline of Imperial Russia 1855 - 1914. New York406: .

Chicago

Sumner B.H, . 1961. The Decline of Imperial Russia 1855 - 1914. New York406: .

Harvard

Sumner B.H, . (1961). The Decline of Imperial Russia 1855 - 1914. New York406: .

MLA

Sumner B.H, . The Decline of Imperial Russia 1855 - 1914. New York406: . 1961.