Gaya APA
Riyanto, S. (2010).
Essentials of english vocabularies for fluent speaking (Cet. Ke-1).
Yogyakarta:
pustaka pelajar.
Gaya MLA
Riyanto, Slamet.
"Essentials of english vocabularies for fluent speaking".
Cet. Ke-1
Yogyakarta:
pustaka pelajar,
2010.
Text.