APA

Hopkins E. A., . (1858). Historico-political memorial upon the region of the Rio de la Plata and conterminous countries, to James Buchanan, president of the United States. New York: Pudney & Russell.

Chicago

Hopkins Edward Augustus, . 1858. Historico-political memorial upon the region of the Rio de la Plata and conterminous countries, to James Buchanan, president of the United States. New York: Pudney & Russell.

Harvard

Hopkins E. A., . (1858). Historico-political memorial upon the region of the Rio de la Plata and conterminous countries, to James Buchanan, president of the United States. New York: Pudney & Russell.

MLA

Hopkins Edward Augustus, . Historico-political memorial upon the region of the Rio de la Plata and conterminous countries, to James Buchanan, president of the United States. New York: Pudney & Russell. 1858.