APA Citation

(2012). The secret of happiness (Cetakan Pertama, Juli 2012.). Yogyakarta: LeutikaPrio.

Chicago Style Citation

The Secret of Happiness. Cetakan Pertama, Juli 2012. Yogyakarta: LeutikaPrio, 2012.

MLA Citation

The Secret of Happiness. Cetakan Pertama, Juli 2012. Yogyakarta: LeutikaPrio, 2012.

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