Albrecht, Robert L.
John Wiley , 1978
Buku Teks SO
Odum, Eugene Pleasants
Saunders College, 1983
Buku Teks
Marshall, P.T.
Macdonald and Evans, 1974
Buku Teks
Fryar, Maridell
National Textbook Co., 1979
Buku Teks
Hitner, Henry
McGraw-Hill, 1999
Buku Teks