Heitger, Lester E.
McGraw-Hill, 1986
Buku Teks
Heitger, Lester E.
Ohio. South-Western Publishing Co., 1992
Buku Teks
Hilton, Ronald W., author
McGraw-Hill, 1997
Buku Teks
Hilton, Ronald W., author
McGraw-Hill, 1991
Buku Teks
Oliver, M. Suzanne, author
Pearson, 2010
Buku Teks