Chalmers, James, author
Glorier International, 1999
Buku Referensi
Lapin, Lawrence L., author
Harcourt Brace Jovanovich, 1978
Buku Teks
Kurnow, Ernest, author
Richard D. Irwin, 1969
Buku Teks
Schlaifer, Robert, author
McGraw-Hill, 1961
Buku Teks
Meigs, Robert F., author
McGraw-Hill, 1990
Buku Teks