APA

Berlepsch H. v., .On some interesting additions to the avifauna of Bucaramanga, U.S. of Colombia. : .

Chicago

Berlepsch Hans von, .On some interesting additions to the avifauna of Bucaramanga, U.S. of Colombia. : .

Harvard

Berlepsch H. v., .On some interesting additions to the avifauna of Bucaramanga, U.S. of Colombia. : .

MLA

Berlepsch Hans von, .: . .