edited by Carmen M. Culver
McGraw-Hill, 1973
Buku Teks
Davies, Ivor K., author
McGraw-Hill, 1973
Buku Teks
Morphet, Edgar L. (Edgar Leroy), 1895- , author
Prentice-Hall, 1982
Buku Teks
Snowden, Petre E.
McGraw-Hill , 1998
Buku Teks
Lewis, Ralph G., author
St. Lucie Press, 1994
Buku Teks