Gaya APA
English vocabulary in use elementary. (2001).
Jakarta:
Erlangga.
Gaya Chicago
English vocabulary in use elementary.
.
Jakarta:
Erlangga,
2001.
Buku.
Gaya MLA
English vocabulary in use elementary.
.
Jakarta:
Erlangga,
2001.
Buku.
Gaya Turabian
English vocabulary in use elementary.
Jakarta:
Erlangga,
2001.
Buku.