APA (7th ed.) Citation

Helmens, K. F. (1990). Neogene-Quaternary geology of the high plain of Bogotá, Eastern Cordillera, Colombia: Stratigraphy, paleoenvironments and landscape evolution. J. Cramer.

Chicago Style (17th ed.) Citation

Helmens, Karin F. Neogene-Quaternary Geology of the High Plain of Bogotá, Eastern Cordillera, Colombia: Stratigraphy, Paleoenvironments and Landscape Evolution. Berlin: J. Cramer, 1990.

MLA (9th ed.) Citation

Helmens, Karin F. Neogene-Quaternary Geology of the High Plain of Bogotá, Eastern Cordillera, Colombia: Stratigraphy, Paleoenvironments and Landscape Evolution. J. Cramer, 1990.