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