Gaya APA
Sagen, A., Mitchell, P. (2002).
Safety and Health at Sea : A Practical Manual for Seafarers (Ed. 1).
United Kingdom:
Penerbit Witherby Seamanship International.
Gaya MLA
Sagen, Arne., Mitchell, Pat.
"Safety and Health at Sea : A Practical Manual for Seafarers".
Ed. 1
United Kingdom:
Penerbit Witherby Seamanship International,
2002.
Text.