na INLIS000000000014020 20130612105327 Ind 010-061300000014020 Ind R.343.096 R.343.096, Sub u Subroto, Thomas Undang-undang no.21 th 1992 tentang pelayaran, Thomas Soebroto 1993 Semarang vi, 158 hlm, 18 cm Pelayaran Undang-undang dan peraturan NBPNMAT