Oliveira, A. Ramos
Politics, economics and men of modern Spain
Victor Gollancz Ltd., 1946
 Buku Teks
Radcliff, Pamela Beth
Modern Spain, 1808 to the present
Wiley-Blackwell, 2017
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Drucker, Peter Ferdinand, 1909-2005
Men, ideas and politics
Harper Colophan Books, 1977
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Burns, Arthur Edward
Modern economics
Harcourt, Brace, 1948
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Hogendorn, Jan S.
Modern economics
Prentice-Hall, 1995
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