Bingham, Neil, author
National Book Network, 1996
Buku Teks
Oneworld , 2000
Buku Teks
Stanford, D
London Longmans 1954
Buku Teks
Henderson, Philip, author
Longmans, L1956
Buku Teks
edited by Havelock Ellis with an introduction by J.A. Symonds
Benn, 1948
Buku Teks