Gillespie, Cecil
Prentice-Hall, 1971
Buku Teks
Cousins, Donald
English Universities Press , 1955
Buku Teks
Niven, William
Prentice-Hall, 1964
Buku Teks
Joel G. Siegel
N.Y Barron, 1995
Buku Referensi
Horngren, Charles T., 1926-
Pearson Education International , 2005
Buku Teks