Taylor, Donald H., author
John Wiley & Sons, 1991
Buku Teks
Taylor, Donald H., author
John Wiley & Sons, 1982
Buku Teks
Taylor, Donald H., author
John Wiley & Sons, 1994
Buku Teks
Skinner, R. M., author
Sir Isaac Pitman, 1966
Buku Teks
Elder, Randal J.
Pearson, 2010
Buku Teks