Cita APA (7a ed.)

Unamuno y Jugo, M. d., & Kerrigan, A. (1972). The tragic sense of life in men and nations. Princeton University Press.

Cita Chicago Style (17a ed.)

Unamuno y Jugo, Miguel de, y Anthony Kerrigan. The Tragic Sense of Life in Men and Nations. Princeton: Princeton University Press, 1972.

Cita MLA (9a ed.)

Unamuno y Jugo, Miguel de, y Anthony Kerrigan. The Tragic Sense of Life in Men and Nations. Princeton University Press, 1972.