(1892). Geologische studien in der Republik Colombia. Tomo I Petrografhie.
Chicago Style (17th ed.) CitationGeologische Studien in Der Republik Colombia. Tomo I Petrografhie. 1892.
MLA (8th ed.) CitationGeologische Studien in Der Republik Colombia. Tomo I Petrografhie. 1892.
Warning: These citations may not always be 100% accurate.