Titchmarsh, E.C.
Chelsea Publishing Company, 1990
Buku Teks SO
Misfaruddin
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 1987
UI - Skripsi Membership
Bloomfield, Peter
John Wiley & Sons, 1976
Buku Teks SO
Brown, James Ward, 1934-
McGraw-Hill, 2012
Buku Teks SO
Brillinger, David Ross
Society for Industrial and Applied Mathematics, 2001
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