Dwi Anjar Feriana
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2011
UI - Skripsi Open
Cox, Alwyn
Dian Rakyat, [date of publication not identified]
Buku Teks SO
Cox, Homer T.
Twayne Publishers, 1967
Buku Teks
Cox, Paul
Currency Press, 1998
Buku Teks SO
Cox, William E. Jr.
N.Y. John Wiley c., 1979
Buku Teks