Spiegel, Murray R.
Schaum's outline of theory and problems of statistics
McGraw-Hill, 1992
 Buku Teks
Cashin, James A.
Schaum's outline of theory and problems of accounting
McGraw-Hill, 1980
 Buku Teks
Holtje, Herbert F.
Schaum`s outline of theory and problems of marketing
McGraw-Hill, 1981
 Buku Teks
Ayres, Frank, 1901-1994
Schaum's outline of theory and problems of matrices
McGraw-Hill, 1986
 Buku Teks
Cashin, James A.
Schaum's outline of theory and problems of accounting
McGraw-Hill, 1981
 Buku Teks