APA Alıntı

Simmel, G. (1977). Problems of the philosophy of history: An epistemological essay. Free Press.

Chicago Stili Alıntı

Simmel, Georg. Problems of the Philosophy of History: An Epistemological Essay. New York: Free Press, 1977.

MLA Alıntı

Simmel, Georg. Problems of the Philosophy of History: An Epistemological Essay. Free Press, 1977.