Gaya APA
Navtex Manual 2012 Edition. (2012).
London:
IMO Publication.
Gaya Chicago
Navtex Manual 2012 Edition.
.
London:
IMO Publication,
2012.
Text.
Gaya MLA
Navtex Manual 2012 Edition.
.
London:
IMO Publication,
2012.
Text.
Gaya Turabian
Navtex Manual 2012 Edition.
London:
IMO Publication,
2012.
Print.