Torchinsky, Alberto
Addison-Wesley, 1987
Buku Teks
Graves, Lawrence M.
McGraw-Hill, 1956
Buku Teks
Saxena, Subhash Chandra
Prentice Hall of India, 1980
Buku Teks
Fischer, Wolfgang, author
[, Vieweg+Teubner Verlag], 2012
eBooks
Henrici, Peter, author
John Wiley & Sons, 1986
Buku Teks