Semmler, Clement
Douglas stewart : a critical study
Twayne, 1974
 Buku Teks SO
Writers of the Western World
Houghton Miffiln, 1954
 Buku Teks SO
Wilde, W.H.
Three radicals
Oxford University Press, 1969
 Buku Teks SO
Hope, Alec Derwent, 1907-2000
Australian writers
Oxford University Press, 1992
 Buku Teks SO
Jones, Joseph
Radical cousins : nineteenth century American and Australian writers
University of Queensland Press, 1976
 Buku Teks SO