Spiegel, Murray R., author
McGraw-Hill, 1974
Buku Teks
Haberman, Richard, author
Pearson Prentice Hall, 2004
Buku Teks
Nau, Tobias, author
Springer, 2012
eBooks
Spiegel, Murray R., author
Erlangga , 1986
Buku Teks
Fokas, Athanassios S., 1952- , author
Society for Industrial and Applied Mathematics, 2008
eBooks