Gaya APA
Civilisation Test CLE. (2004).
-:
CLE International.
Gaya Chicago
Civilisation Test CLE.
.
-:
CLE International,
2004.
Buku.
Gaya MLA
Civilisation Test CLE.
.
-:
CLE International,
2004.
Buku.
Gaya Turabian
Civilisation Test CLE.
-:
CLE International,
2004.
Buku.