Gaya APA
Riyanto, S.
(2013).
Essential grammar and reading strategy for toefl test
(
ed.1)
.
Yogyakarta:
Andi offset.
Gaya MLA
Riyanto, Slamet.
"Essential grammar and reading strategy for toefl test".
ed.1
Yogyakarta:
Andi offset,
2013.
Text.