Mackenzie, W.J.M
Penguin books, 1978
Buku Teks
edited by Maurizio Isabella and Konstantina Zanou
Bloomsbury Academic, An imprint of Bloomsbury Publishing Plc, 2016
Buku Teks
Tiller, R. Mark, author
St. Martin's Press , 1997
Buku Teks
Oliveira, A.Ramos
Victor Gollancz Ltd., 1946
Buku Teks
Houghton Miffiln, 1996
Buku Teks