Gaya APA
Riyanto, S.
(2008).
1000 selected verbs used in speaking english
.
Yogyakarta:
Pustaka Pelajar.
Gaya MLA
Riyanto, Slamet.
"1000 selected verbs used in speaking english".
Yogyakarta:
Pustaka Pelajar,
2008.
Text.