Simon and Schuster, 2004
Buku Teks
Simon & Schuster, 1999
Buku Teks
by Samuel C. Brownstein [and others]
Barron's, 1994
Buku Teks
Lindeburg, Michael R., author
Professional Publications, 2000
Buku Referensi
Brown, Larry Dale, author
Research and Education Association, 1994
Buku Teks