Gaya APA
SPRUYT, John. (1990).
Ship management .
London:
.
Gaya Chicago
SPRUYT, John.
Ship management.
London:
,
1990.
Text.
Gaya MLA
SPRUYT, John.
Ship management.
London:
,
1990.
Text.
Gaya Turabian
SPRUYT, John.
Ship management.
London:
,
1990.
Print.