Grob, Fritz, author
Yale University Press, 1949
Buku Klasik
Duchacek, Ivo D., author
Dryden Press, 1971
Buku Teks
Schuman, Frederick L., author
McGraw-Hill, 1969
Buku Teks
Rourke, John T., author
McGraw-Hill, 2010
Buku Teks
Reynolds, Charles, author
Martin Robertson, 1973
Buku Teks