Elliot, Alfred M.
Burgess Publishing Comp., 1974
Buku Teks SO
Shellhammer, H. S.
The National Press, 1965
Buku Teks SO
Tanner, James T.
Burgess Publishing, 1970
Buku Teks SO
Hickman, Cleveland P.
McGraw-HIll, 2002
Buku Teks SO
Miller, Stephen A.
McGraw-Hill, 2016
Buku Teks SO