Gaya APA
RIYANTO, S.
(2011).
Speak English, Please 1
(
Cet. 3)
.
Yogyakarta:
Pustaka Pelajar.
Gaya MLA
RIYANTO, Slamet.
"Speak English, Please 1".
Cet. 3
Yogyakarta:
Pustaka Pelajar,
2011.
Teks (Monograf).