Gaya APA
Riyanto, S.
(2007).
TOEFL Test Strategy For Listening Comprehension
(
cet.1)
.
Yogyakarta:
Pustaka Pelajar.
Gaya MLA
Riyanto, Slamet.
"TOEFL Test Strategy For Listening Comprehension".
cet.1
Yogyakarta:
Pustaka Pelajar,
2007.
Text.