(1963). Approach to history: Selections in the phylosophy of history from the Greeks to Hegel. Emglewood Cliffs, N.J.: Prentice-Hall.
Παραπομπή Chicago StyleApproach to History: Selections in the Phylosophy of History From the Greeks to Hegel. Emglewood Cliffs, N.J.: Prentice-Hall, 1963.
Παραπομπή MLAApproach to History: Selections in the Phylosophy of History From the Greeks to Hegel. Emglewood Cliffs, N.J.: Prentice-Hall, 1963.
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