Gaya APA
Riyanto, S. (2014).
English For Your Better Future Speak English, Please (Cet ke 4).
Yogyakarta:
Pustaka Pelejar.
Gaya MLA
Riyanto, Slamet.
"English For Your Better Future Speak English, Please".
Cet ke 4
Yogyakarta:
Pustaka Pelejar,
2014.
Text.