Churchill, Winston, Sir, 1874-1965
Houghton Miffiln, 1949
Buku Teks SO
Coleman, Verna
Melbourne University Press, Melbourne Univ. Press
Buku Teks SO
Shaw-Ros Byam
Hongkong : Page One Publishing, 2004,
Buku Referensi
Shaw, Ros Byam
Page One Publishing, 2001
Buku Referensi
Departemant of Information of Republic of Indonesia, 1969
Buku Teks SO