Gaya APA

riyadi, A, K. (2015). the phenomenology of tasawuf: on islam as a cosmic religion (cetakan 1). surabaya: Pustaka Idea.

Gaya MLA

riyadi, Abdul, Kadir. "the phenomenology of tasawuf: on islam as a cosmic religion". cetakan 1 surabaya: Pustaka Idea, 2015. Text.