Branch, Melville C., author
Gadjah Mada University Press, 1995
Buku Teks
Levy, John M., author
Prentice-Hall, 1991
Buku Referensi
Levy, John M., author
Routledge, 2013
Buku Teks
Neuhaus, Fabian, author
Springer, 2015
Buku Teks
Petra L. Doan.
Routledge, 2015
Buku Teks