Lee, Richard, author
Gadjah Mada University press, 1988
Buku Teks
Maidment, David R., editor in chief
McGraw-Hill, 1993
Buku Referensi
Wilson, E.M., author
Palgrave Macmillan, 1990
Buku Teks
Brooks, Kenneth N., author
Wiley-Blackwell, 2013
Buku Teks
Singh, Vijay P., author
Prentice-Hall, 1989
Buku Teks