Gaya APA

Hartono, K, P., Hero, S, Z, T. (2010). Spiritual Problem Solving (cet. 1). Jakarta,: Pro-U Media.

Gaya MLA

Hartono, Kang, Puji., Hero, Solikhin, Zero, To. "Spiritual Problem Solving". cet. 1 Jakarta,: Pro-U Media, 2010. Buku Teks.