Lane, W. Ronald, author
Prentice-Hall, 2001
Buku Teks
Wilmshurst, John, author
Redwood Press, 1985
Buku Teks
edited by Otto Kleppner and Irving Settel
Prentice-Hall, 1970
Buku Teks
Sandage, C.H.
Richard D. Irwin, 1961
Buku Teks
Wells, William D., author
Prentice-Hall, 2000
Buku Teks