Radlauer, Ruth, author
Bowmar, 1971
Buku Teks
Partridge, Eric, 1894-1979, author
Penguin Books, 1982
Buku Teks
Partridge, Eric, 1894-1979, author
Hamish Hamilton, 1994
Buku Referensi
Straus, Jane
Jossey-Bass, 2008
Buku Teks
Harper Collins Publishers, 2003
Buku Referensi