Gaya APA
CETLJOURNAL 2012. (2012).
:
www.cetljournal.co.uk.
Gaya Chicago
CETLJOURNAL 2012.
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:
www.cetljournal.co.uk,
2012.
Jurnal Internasional.
Gaya MLA
CETLJOURNAL 2012.
.
:
www.cetljournal.co.uk,
2012.
Jurnal Internasional.
Gaya Turabian
CETLJOURNAL 2012.
:
www.cetljournal.co.uk,
2012.
Jurnal Internasional.