Ellen May
Smart traders not gamblers
Gramedia Pustaka Utama, 2011
 Buku Teks
Friedfertig, Marc
Electronic Day Traders Secret, Learn from the best of the Best Day Traders / Marc Friedfertig, George West
McGraw-Hill, 1999
 Buku Teks
Bowett, D.W. (Derek William)
The Law of the sea
Manchester University Press, 1967
 Buku Teks
Churchill, R.R.
The law of the sea
Manchester University Press, 1992
 Buku Teks
Sea surveying
edited by Alan E. Ingham
John Wiley & Sons, 1975
 Buku Teks