Glos, Raymond E.
South-Western Publishing, 1947
Buku Teks
Hastings, Paul G.
McGraw-Hill, 1974
Buku Teks
Cunningham, William H.
South-Western, 1984
Buku Teks
Pride, William M.
South Western Cengage Learning, 2012
Buku Teks SO
Straub, Joseph T.
Kent, 1985
Buku Teks SO