Gaya APA
RIYANTO, S.
(2010).
Essential of english Vocabularies: for Fluent Speaking
(
1)
.
Yogyakarta:
Pustaka Pelajar.
Gaya MLA
RIYANTO, SLAMET.
"Essential of english Vocabularies: for Fluent Speaking".
1
Yogyakarta:
Pustaka Pelajar,
2010.
Text.