Stokes, Charles J.
Random House, 1969
Buku Teks
Veech, Annette M.
Prentice-Hall, 2002
Buku Teks
edited by Rupert G. Miller...[et al.]
John Wiley & Sons, 1980
Buku Teks
edited by Robert M. Maclean
[Publisher not identified], [Date of publication not identified]
Buku Teks
edited by Julian Lovelock
Macmillan, 1983
Buku Teks