Saldarini, Robert A., author
Macmillan, 1990
Buku Teks
Saldarini, Robert A., author
Macmillan, 1989
Buku Teks
Martin, Merle P., author
Macmillan, 1991
Buku Teks
Senn, James A., author
McGraw-Hill , 1984
Buku Teks
Lucas, Henry C., author
McGraw-Hill, 1985
Buku Teks