Gaya APA
Riyanto, S. (2010).
Essentials of English Vocabularies for Fluent Speaking (Cet. 1).
Yogyakarta:
Pustaka Pelajar.
Gaya MLA
Riyanto, Slamet.
"Essentials of English Vocabularies for Fluent Speaking".
Cet. 1
Yogyakarta:
Pustaka Pelajar,
2010.
Text.