APA

Greiff C. S. v., . (1851). Letter on a project for a canal between the Atlantic and the Pacific, starting in the Gulf of Urabá and using the Rivers Arato and Napipi. [S.l.]: [s.n.].

Chicago

Greiff C S von, . 1851. Letter on a project for a canal between the Atlantic and the Pacific, starting in the Gulf of Urabá and using the Rivers Arato and Napipi. [S.l.]: [s.n.].

Harvard

Greiff C. S. v., . (1851). Letter on a project for a canal between the Atlantic and the Pacific, starting in the Gulf of Urabá and using the Rivers Arato and Napipi. [S.l.]: [s.n.].

MLA

Greiff C S von, . Letter on a project for a canal between the Atlantic and the Pacific, starting in the Gulf of Urabá and using the Rivers Arato and Napipi. [S.l.]: [s.n.]. 1851.