Gaya APA
Sulistyawati, H., Roosalina, .
(2013).
English for senior high school grade x 1
.
Sidoarjo:
masmedia.
Gaya MLA
Sulistyawati, Helfy., Roosalina, .
"English for senior high school grade x 1".
Sidoarjo:
masmedia,
2013.
Text.