Gaya APA
Sugiarto, Eko. (2008).
The Secret of Sleep .
Jakarta:
Prestasi Pustakaraya.
Gaya Chicago
Sugiarto, Eko.
The Secret of Sleep.
Jakarta:
Prestasi Pustakaraya,
2008.
Text.
Gaya MLA
Sugiarto, Eko.
The Secret of Sleep.
Jakarta:
Prestasi Pustakaraya,
2008.
Text.
Gaya Turabian
Sugiarto, Eko.
The Secret of Sleep.
Jakarta:
Prestasi Pustakaraya,
2008.
Print.