Al-Attas, M. N. S. (1990). The intuition of existence: A fundamental basis of Islamic metaphysics. International Institute of Islamic Thought and Civilization, International Islamic University Malaysia.
Chicago-referens (17:e uppl.)Al-Attas, Muhammad Naguib Syed. The Intuition of Existence: A Fundamental Basis of Islamic Metaphysics. Kuala Lumpur: International Institute of Islamic Thought and Civilization, International Islamic University Malaysia, 1990.
MLA-referens (9:e uppl.)Al-Attas, Muhammad Naguib Syed. The Intuition of Existence: A Fundamental Basis of Islamic Metaphysics. International Institute of Islamic Thought and Civilization, International Islamic University Malaysia, 1990.
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