Davies, Hugh Sykes
Published for the British Council by Longmans, Green, 1960
Buku Teks
Jones, Hugh
Routledge, 1996
Buku Teks
Marder, Daniel, author
Twayne, 1967
Buku Teks
Stewart, Douglas, author
Angus & Robertson, 1966
Buku Teks
Feavearyear, Albert
Oxford Clarendon Press , 1963
Buku Teks