Krause, William J.
Williams and Wilkins, 1981
Buku Teks
Cartner, Leslie, author
J.B. Lippincott, 2008
Buku Teks
Paulsen, Douglas, author
Prentice-Hall, 1996
Buku Teks
Geneser, Finn, author
Binarupa Aksara, 1994
Buku Teks
Finerty, John C.
Lea & Fibiger, 1960
Buku Teks