Beals, Richard
Springer-Verlag, 1980
Buku Teks
editors, Mariano Giaquinta, Giuseppe Modica
Springer, 2012
eBooks
Iyer, V. Ganapathy, author
Tata McGraw-Hill, 1977
Buku Teks
Apostol, Tom M., author
Addison-Wesley, 1974
Buku Teks
Rudin, Walter, 1921-2010, author
McGraw-Hill, 1987
Buku Teks