Gaya APA
Riyanto, S.
(2008).
Seribu Selected Verbs Used In Speaking English
.
Yogyakarta:
Pustaka Pelajar.
Gaya MLA
Riyanto, Slamet.
"Seribu Selected Verbs Used In Speaking English".
Yogyakarta:
Pustaka Pelajar,
2008.
Text.