Gaya APA

Pora,Yusron, . (2003). Develop your english vocabulary, grammar and idiom/ Yusron Pora . Yogyakarta: Pustaka Pelajar.

Gaya MLA

Pora,Yusron, . "Develop your english vocabulary, grammar and idiom/ Yusron Pora". Yogyakarta: Pustaka Pelajar, 2003. Text.