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"International Convention on Tonnage Measurement of Ships, 1969". 1969-06-23. Dicapai 2008-03-23.
International Maritime Organization (2002). "International Convention on Tonnage Measurement of Ships, 1969". International Maritime Organization. Dicapai 2008-03-23.
Hayler, William B. (2003). American Merchant Seaman's Manual. Cornell Maritime Press. ISBN 0-87033-549-9. .
Turpin, Edward A. (1980). Merchant Marine Officers' Handbook (edisi 4th). Centreville, MD: Cornell Maritime Press. ISBN 0-87038-056-X Check |isbn= value: checksum (bantuan). Parameter |coauthors= tidak diketahui diabaikan (guna |author=) (bantuan)

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