"Encomienda". Encyclopedia Britannica. Retrieved 15 May 2021.
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Yeager, Timothy J. (December 1995). "Encomienda or Slavery? The Spanish Crown's Choice of Labor Organization in Sixteenth-Century Spanish America". The Journal of Economic History. 55 (4): 842–843. doi:10.1017/S0022050700042182. JSTOR2123819. S2CID155030781.
Yeager, Timothy J. (December 1995). "Encomienda or Slavery? The Spanish Crown's Choice of Labor Organization in Sixteenth-Century Spanish America". The Journal of Economic History. 55 (4): 842–843. doi:10.1017/S0022050700042182. JSTOR2123819. S2CID155030781.
Yeager, Timothy J. (December 1995). "Encomienda or Slavery? The Spanish Crown's Choice of Labor Organization in Sixteenth-Century Spanish America". The Journal of Economic History. 55 (4): 842–843. doi:10.1017/S0022050700042182. JSTOR2123819. S2CID155030781.