Costa, Horacio La de
Solidaridad Publishing House, 1965
Buku Teks
Whitehead, Alfred North, 1861-1947, author
The Free Press , 1968
Buku Teks
Wallace, Alfred Russel, 1823-1913, author
Cambridge University Press, 2013
Buku Teks
Freud, Sigmund, 1856-1939, author
Beacon Press, 1956
Buku Teks
Greene, Graham, author
Viking Press , 1951
Buku Teks