Ahmad, Nafis
Muslim contribution to geography
Muhammad Ashraf, 1947
Buku Teks SO
Studies in Philosophy And The History of philosophy
edited by John K. Ryan
The Catholic University of America Press, 1963
Buku Teks SO
Dray, William H.
Philosophy of history
Prentice-Hall, 1993
Buku Teks SO
The philosophy of history
Buku Teks
Hegel, George Wilhelm Friedrich
The philosophy of history
Dover, 1956
Buku Teks SO