Gaya APA

Hero, S, Z, T., Hartono, K, P. (2010). Spiritual Prolem Solving (cet. i). Jogjakarta: Pro-U Media.

Gaya MLA

Hero, Solikhin, Zero, To., Hartono, Kang, Panji. "Spiritual Prolem Solving". cet. i Jogjakarta: Pro-U Media, 2010. Text.