Saxena, Subhash Chandra
Prentice Hall of India, 1980
Buku Teks
Nani Grace Berliana, author
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 1991
UI - Skripsi (Membership)
Bruckner, Andrew M.
American Mathematical Society, 1994
Buku Teks
Zhu, Kehe, author
Springer Science, 2012
eBooks
Ahlfors, Lars V., author
McGraw-Hill, 1979
Buku Teks