Fowles, Grant R.
Holt, Rinehart, and Winston, 1977
Buku Teks
Goldstein, Herbert
Addison-Wesley, 1980
Buku Teks
Kibble, T.W.B.
Longman, 1985
Buku Teks
Kibble, T.W.B.
Longman, 1996
Buku Teks
Goldstein, Herbert
Addison-Wesley Publishing Company, INC, 1950
Buku Teks