Adams, John S.
Ballinger Publ., 1976
Buku Teks
edited by: John Halligan and Chris Paris
Longman Chesire, 1984
Buku Teks
Meinar Dewi Pujansari, author
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 1999
UI - Skripsi (Membership)
Gans, Herbert J., author
The Free Press, 1982
Buku Teks
Abrahamson, Mark, author
Prentice-Hall, 1980
Buku Teks