Gaya APA

Riyanto,Slamet, . (2006). Gateway:English for active communication / Slamet Riyanto (Cet.1V). Yogyakarta: Pustaka Pelajar.

Gaya MLA

Riyanto,Slamet, . "Gateway:English for active communication / Slamet Riyanto". Cet.1V Yogyakarta: Pustaka Pelajar, 2006. Text.