Gaya APA

Haggai, J, E., Sutandyo, H. ([s.a]). Bagaimana Mengatasi Kecemasan (How to Win Over Worry) . Batam: Gospel Press.

Gaya MLA

Haggai, John, Edmund., Sutandyo, Harso. "Bagaimana Mengatasi Kecemasan (How to Win Over Worry)". Batam: Gospel Press, [s.a]. Text.