Gaya APA

Riyanto, S. (2010). Developing Vocabulary Skills; At Home, In The Kithen, At The Office, In Factory, At Hotel,At The Bank,At The Hospital,etc. (Cet.1). Yogyakarta: PustakaPelajar.

Gaya MLA

Riyanto, Slamet. "Developing Vocabulary Skills; At Home, In The Kithen, At The Office, In Factory, At Hotel,At The Bank,At The Hospital,etc.". Cet.1 Yogyakarta: PustakaPelajar, 2010. Textbook.