Collier, Basil, author
William Marrow, 1965
Buku Teks
Ryan, Cornelius, author
Simon & Schuster, 1966
Buku Teks
Nugroho Notosusanto, author
Department of Defence and Security, 1970
Buku Teks
Lewis, C. S.
Harpercollins, 1999
Buku Teks
Ryan, Cornelius, author
Simon and Schuster, 1966
Buku Teks