Gaya APA
Hensen, H.
(2003).
Tug Use in Port : A Practical Guide
(
2 Edition 2003)
.
London:
The Nautical Institute.
Gaya MLA
Hensen, Henk.
"Tug Use in Port : A Practical Guide".
2 Edition 2003
London:
The Nautical Institute,
2003.
Text.