Cita APA (7a ed.)

Santayana, G. (1933). Some turns of thought in modern philosophy: Five essays. University Press.

Cita Chicago Style (17a ed.)

Santayana, George. Some Turns of Thought in Modern Philosophy: Five Essays. Cambridge: University Press, 1933.

Cita MLA (9a ed.)

Santayana, George. Some Turns of Thought in Modern Philosophy: Five Essays. University Press, 1933.