APA Citation

Roni Ismail. (2012). The secret of happiness: Rahasia hidup bahagia (Cet. 1.). Yogyakarta: Leutikaprio.

Chicago Style Citation

Roni Ismail. The Secret of Happiness: Rahasia Hidup Bahagia. Cet. 1. Yogyakarta: Leutikaprio, 2012.

MLA Citation

Roni Ismail. The Secret of Happiness: Rahasia Hidup Bahagia. Cet. 1. Yogyakarta: Leutikaprio, 2012.

Warning: These citations may not always be 100% accurate.