Gaya APA
Priyana, J. (2008).
Interlanguage: english for senior high school students XII: language study programme .
Jakarta:
Adi perkasa.
Gaya MLA
Priyana, Joko.
"Interlanguage: english for senior high school students XII: language study programme".
Jakarta:
Adi perkasa,
2008.
Buku Paket.