Ellin, Nan
Routledge, 2006
Buku Teks
Smith, Peter F.
Hutchinson Educational, 1974
Buku Teks
Mostafavi, Mohsen
Lars Muller Publishers, 2010/2011
Buku Teks
Sibarani, Maslen
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 1986
UI - Skripsi Membership
Hochstadt, Harry
John Wiley & Sons, 1973
Buku Teks