Lightstone, A. H., author
Appleton-Century-Crofts, 1969
Buku Teks
Fisher, Robert C.
Dickenson Publishing Company, Inc., 1970
Buku Teks
Fuller, Leonard E., author
Dickenson, 1966
Buku Teks
Zelinsky, Daniel, author
Academic Press, 1968
Buku Teks
Curtis, Morton Landers, author
Springer-Verlag, 1990
Buku Teks