Griffin, Ricky W., author
Houghton Miffiln, 1982
Buku Teks
Griffin, Ricky W., author
Houghton Miffiln, 1990
Buku Teks
Barney, Jay B.
Houghton Miffiln, 1992
Buku Teks
Head, Thomas C.
Houghton Miffiln, 1986
Buku Teks
Bernhardt, Kenneth L
Bussiness Publications, 1985
Buku Teks