Howe, W. (1968). The Mining Guild of New Spain and its Tribunal General, 1770-1821. Greenwood Press.
Lua i Stíl Chicago (17ú heag.)Howe, Walter. The Mining Guild of New Spain and Its Tribunal General, 1770-1821. New York: Greenwood Press, 1968.
Lua MLA (8ú heag.)Howe, Walter. The Mining Guild of New Spain and Its Tribunal General, 1770-1821. Greenwood Press, 1968.
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