Esmail, Aziz. "The Ethical Imperative in Islam: Approaches to Suffering and Justice." The Muslim World, vol. 86, no. 3--4, 1996, pp. 317--340.
Gethin, Rupert. "The Foundations of Buddhism: An Introduction to Its Philosophical Traditions." Religious Studies Review, vol. 22, no. 1, 1996, pp. 9--14.
Sumber Al-Qur'an dan Hadis
Al-Qur'an. Terjemahan oleh Departemen Agama Republik Indonesia.
Sahih Bukhari dan Sahih Muslim, berbagai hadis tentang ujian, kesabaran, dan takdir.
Sumber Filsafat dan Etika Sekuler
Camus, Albert. The Myth of Sisyphus. Translated by Justin O'Brien. New York: Vintage International, 1991.
Dawkins, Richard. The God Delusion. New York: Houghton Mifflin Harcourt, 2006.
Nietzsche, Friedrich. Thus Spoke Zarathustra. Translated by Walter Kaufmann. New York: Penguin Books, 1978.
Sumber Online
Stanford Encyclopedia of Philosophy. "Buddhist Philosophy." https://plato.stanford.edu/entries/buddhist-philosophy/
