1. The origin of the bird fauna of the south Venezuelan highlands;E Mayr;Bulletin of the American Museum of Natural History,1967
2. Consideraciones sobre el concepto de Pantepui;O Huber;Pantepui,1987
3. Huber O (1995) Geographical and physical features. In: Steyermark JA, Berry PE, Holst BK, editors. Flora of the Venezuelan Guyana. Saint Louis, Missouri: Missouri Botanical Garden Press. 1–61.
4. Geomorphology of the Gran Sabana, Guyana Shield, southeastern Venezuela;HO Briceño;Geomorphology,1990
5. Guayana highlands versus Guayana lowlands, a reappraisal;O Huber;Taxon,1988