Shapiro, Benson P., author
Richard D. Irwin, 1985
Buku Teks
Copeland, Melvin T., author
Harvard University Press, 1955
Buku Teks
Champion, John M.
Richard D. Irwin, 1985
Buku Teks
This, Leslie E.
Adison Wesley Publishing, 1974
Buku Teks
Certo, Samuel C.
Allyn and Bacon, 1989
Buku Teks