Iacone, Salvatore J., author
Macmillan, 1985
Buku Teks
Sigband, Norman B.
Harper & Brothers Publ , 1960
Buku Teks
Lesikar, Raymond V. (Raymond Vincent), author
Dow Jones-Irwin , 1974
Buku Teks
Murphy, Herta A., author
McGraw-Hill, 1991
Buku Teks
Weaver, Patricia C., author
Free Press, 1977
Buku Teks