Gaya APA
Riyanto, S. (2011).
English for your better future speak english please 2 (Cet. 3, 2011).
Yogyakarta:
Pustaka Pelajar.
Gaya MLA
Riyanto, Slamet.
"English for your better future speak english please 2".
Cet. 3, 2011
Yogyakarta:
Pustaka Pelajar,
2011.
Text.