Carlborg, Frank W.
Scoott, Foresman, 1968
Buku Teks
Ott, Lyman, author
Duxbury Press, 1993
Buku Teks
Brieger, E.M.
Academic Press, 1963
Buku Teks
Rickmers, Albert D., author
McGraw-Hill, 1967
Buku Teks
Vance, Elbridge P.
Addison-Wesley , 1963
Buku Teks