Gaya APA
Salvage Operations. (1980).
London:
Stanford maritime london.
Gaya Chicago
Salvage Operations.
.
London:
Stanford maritime london,
1980.
Text.
Gaya MLA
Salvage Operations.
.
London:
Stanford maritime london,
1980.
Text.
Gaya Turabian
Salvage Operations.
London:
Stanford maritime london,
1980.
Print.