Gaynor, Patricia E., author
McGraw-Hill, 1994
Buku Teks
Frank Schonthaler, author
Springer-Verlag, 2012
eBooks
O`Neil, John Tettemer
Irwin , 1965
Buku Teks
Day, R.A., author
Prentice-Hall, 1977
Buku Teks
Day, R.A., author
Prentice-Hall, 1958
Buku Teks