Zumwalt, Admiral Elmo
Macmillan Publishing Company, 1986
Buku Teks
Zaharia, Gheorghe
Stiintifica si Enciclopedica, 1975
Buku Teks
Jackson, Robert Houghwout, author
Alfred A. Knopf, 1946
Buku Teks
Aarons, Mark
William Heinemann Australia, 1989
Buku Teks
Lubis, Parlindungan, author
Komunitas Bambu, 2006
Buku Teks