Gaya APA
Biafore, B.
(2006).
On Time! On Track! On Target!
.
Jakarta:
Pt Elex Media Komputindo.
Gaya MLA
Biafore, Bonnie.
"On Time! On Track! On Target!".
Jakarta:
Pt Elex Media Komputindo,
2006.
Buku Teks.