References
- Bell, S. 1998. Campanha gaúcha: A Brazilian ranching system, 1850–1920. Stanford, CA: Stanford University Press.
- Eakin, M. C. 2002. Expanding the boundaries of imperial Brazil. Latin American Research Review 37 (2): 260–67.
- Hoelle, J. 2015. Rainforest cowboys: The rise of ranching and cattle culture in western Amazonia. Austin, TX: University of Texas Press.