Noll, Kenneth
Ann Anbor Science, 1975
Buku Teks
Pritchard, Sonia Zaide
Croom Helm, 1987
Buku Teks
edited by A.P.M. Lockwood
Cambridge University Press, 1976
Buku Teks
Sciences Publishers Inc., 1979
Buku Teks
Okidi, C.Odidi
Sijthoff and Noordhoof, 1978
Buku Teks