Barron, Robert A., author
Allyn and Bacon, 1990
Buku Teks
Greenberg, Jerald, author
Prentice-Hall, 2003
Buku Teks
Greenberg, Jerald, author
Prentice-Hall, 1995
Buku Teks
Greenberg, Jerald, author
Pearson Education, 2003
Buku Teks
Davis, Keith, 1918-, author
McGraw-Hill, 1989
Buku Teks