Rosen, Harvey S., author
Richard D. Irwin, 1991
Buku Teks
Ward, Richard, author
Prentice-Hall, 1965
Buku Teks
Ward, Richard, author
Prentice-Hall, 1965
Buku Teks
Richards, R. Malcolm, author
Scott, Foresman, 1984
Buku Teks
Penson, John B., author
Prentice-Hall, 1982
Buku Teks