APA-viite (7. p.)

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-viite (17. p.)

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-viite (9. p.)

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.