APA Citation

Lukman Hakim. (2007). Upgrade Yourself. Surakarta: Era Intermedia.

Chicago Style Citation

Lukman Hakim. Upgrade Yourself. Surakarta: Era Intermedia, 2007.

MLA Citation

Lukman Hakim. Upgrade Yourself. Surakarta: Era Intermedia, 2007.

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