Não informado. (1951). East European accessions list. Library of Congress, Processing Department.
Chicago-referens (17:e uppl.)Não informado. East European Accessions List. Washington: Library of Congress, Processing Department, 1951.
MLA-referens (8:e uppl.)Não informado. East European Accessions List. Library of Congress, Processing Department, 1951.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.