Youse, Bevan K.
Allyn and Bacon, 1974
Buku Teks
Whitehead, Alfred North, 1861-1947
Oxford University Press, 1969
Buku Teks
McEliece, Robert J.
Random House, 1989
Buku Teks
Fine, Nathan J.
Rand McNally, 1965
Buku Teks
Fine, Nathan J.
Rand McNally, 1965
Buku Teks