Vieira, C. E. L. (2004). Permian plants from the Chutani Formation (Titicaca Group, Northern Altiplano of Bolivia): I. Genera Pecopteris and Asterotheca. Academia Brasileira de Ciências.
Chicago Style (17th ed.) CitationVieira, Carlos E. L. Permian Plants from the Chutani Formation (Titicaca Group, Northern Altiplano of Bolivia): I. Genera Pecopteris and Asterotheca. Academia Brasileira de Ciências, 2004.
MLA (9th ed.) CitationVieira, Carlos E. L. Permian Plants from the Chutani Formation (Titicaca Group, Northern Altiplano of Bolivia): I. Genera Pecopteris and Asterotheca. Academia Brasileira de Ciências, 2004.
Warning: These citations may not always be 100% accurate.