Gaya APA
Dockmanship. (1992).
Centreville:
Cornell Maritime Press.
Gaya Chicago
Dockmanship.
.
Centreville:
Cornell Maritime Press,
1992.
Text.
Gaya MLA
Dockmanship.
.
Centreville:
Cornell Maritime Press,
1992.
Text.
Gaya Turabian
Dockmanship.
Centreville:
Cornell Maritime Press,
1992.
Print.