Stevenson, Burton Egbert, author
Henry Holt, 1942
Buku Referensi
Mosby, Frank
Blackie & Son Ltd, 1949
Buku Teks
Dransfield, Michael
University of Queensland Press, 1978
Buku Teks
Flecher, William John Bainbrigge
Commercial Press, 1932
Buku Teks
edited by Michael Roberts
Faber and Faber, 1966
Buku Teks