Παραπομπή APA

Simmel, G., & Oakes, G. (1977). The problems of the philosophy of history: An epistemological essay. New York: The Free Press.

Παραπομπή Chicago Style

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

Παραπομπή MLA

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

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