Palmer, Alan
The Penguin dictionary of modern history, 1789-1945
Penguin Books, Harmondsworth, Middlesex, 1981
 Buku Teks SO
Palmer, Alan
The penguin dictionary of twentieth-century history 1900-1982
Penguin Books, 1987
 Buku Referensi
Palmer, Alan
The new Penguin dictionary of modern history, 1789-1945
Penguin Books, 1981
 Buku Referensi
Bannock, G.
The Penguin dictionary of economics
Penguin Books, 1974
 Buku Referensi
Thomas, Merlin
The Penguin French dictionary
Penguin Books, 1985
 Buku Referensi