Lourenco, Eduardo, author
Gradiva, 2005
Buku Referensi
edited by A.P. Martinich
Blackwell, 2007
Buku Teks
Castell, Alburey
Macmillan, 1959
Buku Teks
Locke, John, author
J.M. Dent and Sons , 1947
Buku Teks
Spinoza
J.M. Dent & Sons LTD., 1959
Buku Teks