Bruice, Paula Yurkanis
Upper Saddle River, 2001
Buku Teks
Fessenden, Ralph J.
Willard Grant Press, 1979
Buku Teks
Solomons, T.W. Graham
John Wiley & Sons, 1976
Buku Teks
Solomons, T.W. Graham
John Wiley & Sons, 1979
Buku Teks
Jurch, George R.
Burgess, 1975
Buku Teks