Gaya APA

Ismail, R. (2008). Inner Happiness Building (Rasa Hidup Bahagia) (Cet. 13). Gorontalo: Cupid Media Group.

Gaya MLA

Ismail, Roni. "Inner Happiness Building (Rasa Hidup Bahagia)". Cet. 13 Gorontalo: Cupid Media Group, 2008. Text.