Whitehead, Alfred North, 1861-1947, author
New American Library, 1956
Buku Teks
Sichel, Edith
Oxford University Press, 1959
Buku Teks
Schenk, V. W. D.
Uig. G. A. van Oorschot, 1946
Buku Teks
Lucas, Henry S., author
Harper and Row, 1960
Buku Teks
Lodge, Thomas, author
Scarecrow Press, 1970
Buku Teks