Mullins, Hugh A.
Cornell maritime Press, 1959
Buku Teks
Goodacre, J. Kenneth, author
Witherby, 1981
Buku Teks
Mustill, Michael J., Sir, author
Stevens & Sons, 1981
Buku Teks
Brown, Robert H.
Witherby & co. Ltd., 1975
Buku Teks
Koh, Soon Kwang, Peter
Longmans, 1989
Buku Teks