Gaya APA
Doff, A.
(1991).
WRITING (STUDENT'S BOOK 2)
.
Yogyakarta:
Anggota Ikatan Penerit Indonesia.
Gaya MLA
Doff, Adrian.
"WRITING (STUDENT'S BOOK 2)".
Yogyakarta:
Anggota Ikatan Penerit Indonesia,
1991.
Text.