Moore, Gary A.
South-Western Publishing, 1987
Buku Teks
Kubasek, Nancy K.
Pearson Prentice Hall, c2009
Buku Teks
Kubasek, Nancy K.
Pearson, 2015
Buku Teks
Buttler, Henry N.
South-Western Publishing Co., 1987
Buku Teks
Blackburn, John D.
Richard D. Irwin , 1985
Buku Teks