Gaya APA

Swindoll, C, R. (2001). Strengthening Your Grup: essentials in an aimless world (Trawas) . America: Insight For Living.

Gaya MLA

Swindoll, Chartes, R.. "Strengthening Your Grup: essentials in an aimless world (Trawas)". America: Insight For Living, 2001. Text.