Gaya APA
Laut, D, -, D, P.
(2010).
Entering into enclosed spaces
.
:
DJP - Dirjend Perhubungan Laut.
Gaya MLA
Laut, DJP, -, Dirjend, Perhubungan.
"Entering into enclosed spaces".
:
DJP - Dirjend Perhubungan Laut,
2010.
CD-ROM.