Gaya APA
Seamanship Notes. (2010 ).
London:
Witherby Seamanship International.
Gaya Chicago
Seamanship Notes.
.
London:
Witherby Seamanship International,
2010 .
Text.
Gaya MLA
Seamanship Notes.
.
London:
Witherby Seamanship International,
2010 .
Text.
Gaya Turabian
Seamanship Notes.
London:
Witherby Seamanship International,
2010 .
Print.