Kanichai, C. (1981). R.G. Collingwood's philosophy of history. Pontifical Institute of Theology and Philosophy.
Chicago-referens (17:e uppl.)Kanichai, Cyriac. R.G. Collingwood's Philosophy of History. Alwaye, India: Pontifical Institute of Theology and Philosophy, 1981.
MLA-referens (8:e uppl.)Kanichai, Cyriac. R.G. Collingwood's Philosophy of History. Pontifical Institute of Theology and Philosophy, 1981.
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