Robertson, Margaret, editor
Springer, 2012
eBooks
Spate, Oskar Hermann Kristian, author
Oxford University Press, 1965
Buku Teks
Twain, Mark, 1835-1910, author
Penguin Books, 1973
Buku Teks
Ellis, Niki, author
Oxford University Press, 2001
Buku Teks
Norton, Frank
Angus and Robertson, 1953
Buku Teks