Bickley, Lynn S., author
J.B. Lippincott, 1996
Buku Teks
Perry, Anne Griffin, author
Mosby, 2007
Buku Teks
Calverley, John
American Express Bank , 1994
Buku Teks
Calvert, Fred
Butterworth, 1978
Buku Teks
Peterson, Peronica Ronnie, author
Mosby , 2009
Buku Teks