Glover, Thomas, author
McGraw-Hill, 2002
Buku Teks
Spiegelman, Mortimer, author
Harvard University Press, 1968
Buku Teks
Atkinson, John W., author
D. Van Nostrand, 1978
Buku Teks
Mckee, James B., author
Holt, Rinehart and Winston, 1969
Buku Teks
Copi, Irving M., author
Macmillan, 1972
Buku Teks