Gaya APA
riyanto, S.
(2007).
TOEFL TEST STRATEGY FOR STRUCTURE AND WRITTEN EXPRESSION
.
Yogyakarta:
Pustaka Pelajar.
Gaya MLA
riyanto, Slamet.
"TOEFL TEST STRATEGY FOR STRUCTURE AND WRITTEN EXPRESSION".
Yogyakarta:
Pustaka Pelajar,
2007.
Text.