Silalahi, Ria Yunita Devianty, author
Universitas Indonesia, 2002
UI - Skripsi (Membership)
Ivamy, E.R. Hardy
Butterworth, 1980
Buku Teks
Goodacre, J. Kenneth, author
Witherby, 1981
Buku Teks
Mullins, Hugh A.
Cornell maritime Press, 1959
Buku Teks
Mustill, Michael J., Sir, author
Stevens & Sons, 1981
Buku Teks