Gaya APA
Ships Routeing Sixth Edition (1991) 1992 Amendments. (1991).
London:
International Maritime Organization.
Gaya Chicago
Ships Routeing Sixth Edition (1991) 1992 Amendments.
.
London:
International Maritime Organization,
1991.
Text.
Gaya MLA
Ships Routeing Sixth Edition (1991) 1992 Amendments.
.
London:
International Maritime Organization,
1991.
Text.
Gaya Turabian
Ships Routeing Sixth Edition (1991) 1992 Amendments.
London:
International Maritime Organization,
1991.
Print.