Gaya APA
Sumiratingratri, E, F, R.
(2009).
English Everywhere
.
2009:
Cahaya Pustaka Raga.
Gaya MLA
Sumiratingratri, Erna, Fitriani,, Ratih.
"English Everywhere".
2009:
Cahaya Pustaka Raga,
2009.
Text.