Gaya APA
Riyadi, S.
(2007).
Smart Solution for Listening Test
(
Cet. 1)
.
Yogyakarta:
Pustaka santri.
Gaya MLA
Riyadi, Slamet.
"Smart Solution for Listening Test".
Cet. 1
Yogyakarta:
Pustaka santri,
2007.
.