Gloria B. Barrett [and others]
Everyday Learning Corporation, 1999
Buku Teks
Salas, Saturnino L., author
John Wiley & Sons, 1979
Buku Teks
Huettenmueller, Rhonda, author
McGraw-Hill, 2012
Buku Teks
Silver, Howard A.
Prentice-Hall, 1979
Buku Teks
editor, Karen Hunt-Ahmed
John Wiley & Sons, 2013
Buku Teks