APA Style

Riyanto, S. et al ([s.a]). Developing Vocabulary Skills At home, In the Kitchen, At the Office, In A Factory, At Hotel, At the Bank, At the Hospital, Etc . Yogyakarta: Pustaka Pelajar.

MLA Style

Riyanto, Slamet. et al. "Developing Vocabulary Skills At home, In the Kitchen, At the Office, In A Factory, At Hotel, At the Bank, At the Hospital, Etc". Yogyakarta: Pustaka Pelajar, [s.a]. Teks.