Isaacson, Robert L., author
Harper & Row, 1965
Buku Teks
Carlson, Neil R., author
Allyn and Bacon, 1993
Buku Teks
Carlson, Neil R., author
Allyn and Bacon , 1997
Buku Teks
Passer, Michael W., author
McGraw-Hill, 2007
Buku Teks
Passer, Michael W., author
McGraw-Hill, 2009
Buku Teks