Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.