Ellsworth, John W
McGraw-Hill, 1976
Buku Teks
contributors, Frederick C. Barghoorn ... [and others] ; edited by Sigmund Neumann
University of Chicago Press, 1956
Buku Teks
Rush, Michael, author
Harvester Wheatsheaf, 1992
Buku Teks
Baradat, Leon P., author
Prentice-Hall, 1991
Buku Teks
Perlmutter, Amos, author
Yale University Press, 1981
Buku Teks