Shafer, R. J. (1958). The economic societies in the Spanish world, 1763-1821. Syracuse University Press.
Chicago-referens (17:e uppl.)Shafer, Robert Jones. The Economic Societies in the Spanish World, 1763-1821. [Syracuse, N.Y.]: Syracuse University Press, 1958.
MLA-referens (9:e uppl.)Shafer, Robert Jones. The Economic Societies in the Spanish World, 1763-1821. Syracuse University Press, 1958.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.