Juszli, Frank L.
Prentice-Hall, 1969
Buku Teks
Schaaf, William L.
Wiley-Academy, 1965
Buku Teks
Whitehead, Alfred North, 1861-1947, author
Oxford University Press, 1969
Buku Teks
Craig, Robert T., author
Prentice-Hall, 1969
Buku Teks
Smith, Karl J., author
Brooks/Cole, 1973
Buku Teks