Heer, F., & Steinberg, J. (1968). The intellectual history of Europe. Doubleday.
Cita Chicago Style (17a ed.)Heer, Friedrich, y Jonathan Steinberg. The Intellectual History of Europe. Garden City, New York: Doubleday, 1968.
Cita MLA (9a ed.)Heer, Friedrich, y Jonathan Steinberg. The Intellectual History of Europe. Doubleday, 1968.
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