Cita APA (7th ed.)

Castro, A. (1977). An idea of history: Selected essays of Américo Castro. Ohio State University Press.

Cita Chicago (17th ed.)

Castro, Américo. An Idea of History: Selected Essays of Américo Castro. Columbus: Ohio State University Press, 1977.

Cita MLA (8th ed.)

Castro, Américo. An Idea of History: Selected Essays of Américo Castro. Ohio State University Press, 1977.